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-Release Notes
-=============
-
-1- Features
-===========
-    - New in Version 4.2.0
-      --------------------
-      This release heralds many improvements and a host of bug fixes, along with
-      some significant changes from previous versions. Further, as promised, it
-      marks the end of support for 32 bit operating systems and is only
-      available for 64 bit operating systems.
-
-      With this version the change to the new model API and plugins infrastructure
-      begun with 4.0 is essentially complete (though extensions are in the works
-      and more are likely they should remain backwardly compatible with previous
-      versions of SasView).
-
-      NOTE: Old-style plugin models, including old sum|multiply models will continue
-      to be supported (i.e. SasView will be able to run them) in 4.x. However,
-      the expectation is that such support will be removed in 5.0 and everyone
-      is strongly encouraged to convert their custom models to the new API.
-
-      Finally, the changes to orientation angles and orientational distribution
-      definitions are now also complete.
-
-      - Changes
-         - The infrastucture for calculating 2D patterns from 3D orientated objects
-           has been totally re-factored. It is now more accurate and consistent
-           across models.
-         - The way that SasView defines the orientation of anisometric and
-           aligned objects has been completely overhauled. It now differs from
-           previous versions.
-         - Plugin models, including sum|multiply models, have completely migrated
-           to the new infrastructure. NOTE that 3.x type models as well as early,
-           intermediate 4.x type models, including those generated by sum|multiply
-           will continue to be supported in 4.x but will likely no longer be
-           supported after the move to 5.0.  Users are strongly encouraged to
-           migrate any custom models.
-         - The NeXus loader has been removed as it is superseded by the NXcanSAS
-           standard loader and SasView does not support the treatment of raw
-           data.
-      - Improvements
-         - The accuracy/speed of some numerical integrations have been improved.
-         - An orientation viewer tool has been introduced to assist in
-           understanding the new orientation framework.
-         - Problems with the computation of magnetic scattering from some
-           objects have been rectified. Some questions remain however.
-         - The known issue with the core_shell_parallelepiped model is now fixed.
-         - A number of issues and inconsistencies with the creation of
-           sum|multiply models have been rectified.
-         - A Boltzmann distribution has been added for polydispersity/orientational
-           distributions.
-         - Some batch slicing options have been introduced.
-         - Correlation function analysis now computes both the 1D and 3D functions.
-         - There are several data loading improvements.
-         - There are several improvements to Save/Load Project.
-         - There have been numerous other bug fixes.
-      - Documentation
-           Several sections of the help documentation have undergone significant
-           checking and updating, particularly those relating to orientation,
-           magnetic scattering, and polydispersity distributions. Detailed
-           advanced instructions for plugin writing and some scripting
-           instructions have been added.
-      - Other work
-         - A Third-Party initiative has recently succeeded in getting SasView to
-           run on Debian. More details at
-           http://trac.sasview.org/wiki/DevNotes/Projects/Debian
-         - With this release we have started to prepare for the inevitable move
-           to Python 3, which will occur with the release of 5.0
-         - SasView 5.0 is currently in development. The two most significant
-           features of this version will be (i) a move away from the present
-           WxPython GUIs to new, completely rewritten, Qt5 GUIs, and
-           (ii)implementation of the Beta-approximation for S(Q). Subject to
-           resources, some limited access to the latter functionality may be
-           available in a future SasView 4.x release.
-      - Bug Fixes
-         Fixes # 260: Box integration does not update when entering values in dialog
-         Fixes # 446: Saving plot as PGF (not PDF!) format throws error
-         Fixes # 467: Extend batch functionality to slicer
-         Fixes # 489: ABS reader (NIST 1D) does not handle negative dx properly
-                      (USANS slit smearing)
-         Fixes # 499: create sin(x)/x, 2*J1(x)/x and 3*j1(x)/x functions
-         Fixes # 510: Build PDF documentation along with HTML
-         Fixes # 525: Add GUI category defaults to models in sasmodels
-         Fixes # 579: clean up sasview directory
-         Fixes # 597: Need to document Combine Batch Fit
-         Fixes # 645: GUI logic problem in Batch vs single fit mode
-         Fixes # 648: Need to allow user input background value in Pr perspective
-         Fixes # 685: Fix data upload to marketplace
-         Fixes # 695: linear slope in onion model
-         Fixes # 735: Review new Corfunc documentation
-         Fixes # 741: Recalculate P(Q) and S(Q) components on model update.
-         Fixes # 767: Sum/Product Models don't do what they should
-         Fixes # 776: angular dispersity
-         Fixes # 784: Add 3D integral to Correlation Function analysis
-         Fixes # 786: core_shell_parallelepiped 1-D model is incorrect
-         Fixes # 818: "report button" followed by "save" makes an empty pdf file
-         Fixes # 838: Fix model download from marketplace
-         Fixes # 848: can't save analysis when only one fit page
-         Fixes # 849: Load Folder should ignore files starting with "."
-         Fixes # 852: More unit tests, especially for oriented or 2d models
-         Fixes # 854: remove unnecessary sleep() in fitting perspective
-         Fixes # 856: Reading SAS_OPENCL from custom_config sometimes raises an ERROR
-         Fixes # 861: cannot defined a structure factor plugin
-         Fixes # 864: New Model Editor (simple plugin editor) error parsing
-                      parameter line
-         Fixes # 865: Plugin live discovery issues
-         Fixes # 866: inform user when NaN is returned from compute
-         Fixes # 869: fit page computation thread cleanup
-         Fixes # 875: Possible weirdness with 1D NXcanSAS data
-         Fixes # 876: Add check for HDF5 format in dataloader
-         Fixes # 887: reorganize tree, separating the installed source from the
-                      build source
-         Fixes # 889: Refactor dataloader error handling infrastructure
-         Fixes # 890: use new orientation definition for asymmetric shapes
-         Fixes # 891: update docs for oriented shapes with new orientation definition
-         Fixes # 896: equations in core shell parallelepiped docs do not match code
-         Fixes # 898: Image Viewer Tool file selector issue
-         Fixes # 899: Igor Reader q calculation
-         Fixes # 902: IgorReader Q calculation needs fixing/improving
-         Fixes # 903: sasview - all non-gui tests should be converted to run in Python 3
-         Fixes # 906: polydispersity not showing up in tabulated results
-         Fixes # 912: About box points to misleading contributors page on Github
-         Fixes # 915: load project issues
-         Fixes # 916: Proper Logging
-         Fixes # 920: Logarithmic binning option in the slice viewer
-         Fixes # 921: Improve developer communication methods
-         Fixes # 922: Remove support for all data formats that are not in q space
-         Fixes # 923: Add CI and trac integrations to Slack
-         Fixes # 930: fitting help says chisq is normalized to number of points
-         Fixes # 931: Allow admins to edit all models and upload data etc on
-                      marketplace
-         Fixes # 932: Need to fix upload of data files to marketplace
-         Fixes # 934: Slurp tutorial repo for tutorials
-         Fixes # 935: Build new tutorials as PDF
-         Fixes # 943: Deep copy error on setting model after data is selected
-         Fixes # 950: Most of the readers don't close files properly.
-         Fixes # 954: cross check dll/opencl/python polydispersity and
-                      orientation results
-         Fixes # 956: Possible problem with new doc build process
-         Fixes # 961: sasmodels tests should fail if the parameter name does not exist
-         Fixes # 962: star polymer typo in docs
-         Fixes # 967: no uncertainties errors on fitting parameters
-         Fixes # 969: About Box not picking up dls_logo.png
-         Fixes # 970: ASCII loader doesn't handle ISIS 2D ASCII
-         Fixes # 974: blacklist Intel HD 620/630 for double precision
-         Fixes # 978: load project fails for pages which have not been defined
-         Fixes # 983: Remove Nexus Loader
-         Fixes # 984: PDF reports are not being properly generated on Windows
-         Fixes # 985: Saving Project Fails
-         Fixes # 986: Send to fitting overwrites theory page even if blank
-                      FitPage has focus
-         Fixes # 990: utest_sasview.py giving different results than run_one.py
-         Fixes # 993: Windows x64 versions not installing to correct folder
-         Fixes # 994: Error changing fit engine
-         Fixes # 995: OpenCL required on Linux even if turned off in GUI
-         Fixes #1006: multiplicity models don't work with SQ
-         Fixes #1007: spherical_sld model freezes SasView
-         Fixes #1008: plugin model scaling not working? S
-         Fixes #1010: Win64 build script not creating working executable
-         Fixes #1011: sld_test failing on ubuntu
-         Fixes #1013: FileReaderBaseClass output[] not reset - same file loaded
-                      multiple times
-         Fixes #1018: add Boltzmann distribution
-         Fixes #1021: add PDF documentation to website and document in wiki
-                      release process
-         Fixes #1024: Update version numbers in master
-         Fixes #1025: Sum/multiply editor hangs
-         Fixes #1032: convert C++ modules to C
-         Fixes #1035: Order of combining P(Q) and S(Q) in Plugins seems to matter
-         Fixes #1037: data loader crop not working? & all fits crashing
-         Fixes #1043: problem compiling marketplace models
-         Fixes #1050: fix appveyor test for sasmodels win 64 python 3
-         Fixes #1052: Can't use a user-created plugin model in a plugin model
-         Fixes #1057: phi rotation issue for elliptical cylinder
-         Fixes #1060: incorrect default for rectangle dispersion
-         Fixes #1062: win32 build not installing correctly
-         Fixes #1064: Fitting did not converge!!! error with a Sum|Multi plugin model
-         Fixes #1069: GUI problem when using polydispersity/orientation distributions
-         Fixes #1070: Parameter error boxes should not be editable
-         Fixes #1079: Remove save button in report dialog on Mac
-         Fixes #1081: GUI problem with new orientation distribution
-         Fixes #1083: Magnetic models not being computed
-         Fixes #1099: Erratic behaviour of Sum|Multi model in 4.1.2
-         Fixes #1101: Batch results page not displaying polydispersity values
-         Fixes #1131: OpencCl dialog does not open
-         Fixes #1132: Slit Size Calculator Tool not working
-         Fixes #1139: Missing Docs and Help for new Batch Slicing
-         Fixes #1141: Intro to scripting.rst needs improvement
-         Fixes #1142: Plugin framework is broken
-         Fixes #1044: Unable to upload c file to marketplace
-         Fixes #1145: Update models in model marketplace to 4.2 when 4.2 is released.
-         Fixes #1148: Documentation for S(Q) models need updating
-         Fixes #1128: AutoPlot generation for model documentation does not
-                      include background
-
-      It is recommended that all users upgrade to this version, but your
-      attention is drawn to the Changes section above.
-
-
-    - New in Version 4.2.0-Beta
-      -------------------------
-      This is a beta pre-release version of 4.2.0.  A number of fixes and changes
-      have been made in the year since the previous release. Full release notes
-      will be compiled prior to the full release 4.2.0.
-
-      Highlights are:
-        - Infrastucture for calculating 2D patterns from 3D orientated objects
-          has now been totally refactored
-        - Plugins have completely migrated to the new infrastructure now,
-          including sum/multiply models
-        - Some batch slicing options have been introduced
-        - The known issue with the core_shell_parallelepiped is now fixed
-        - Several data loading improvements
-        - Several save Project improvements (though there are more to come)
-        - Numerous bug fixes
-        - Lots of documentation enhancement
-
-      In the meantime please report any bugs or issues found while using this beta
-
-
-    - New in Version 4.1.2
-      --------------------
-      This point release is a bug-fix release addressing:
-
-       - Fixes #984: PDF Reports Generate Empty PDFs
-       - Fixes a path typo
-       - 64 bit and 32 bit Windows executables now available
-
-      It is recommended that all users upgrade to this version
-
-
-    - New in Version 4.1.1
-      --------------------
-      This point release is a bug-fix release addressing:
-
-       - Fixes #948: Mathjax CDN is going away
-       - Fixes #938: Cannot read canSAS1D file output by SasView
-       - Fixes #960: Save project throws error if empty fit page
-       - Fixes #929: Problem deleting data in first fit page
-       - Fixes #918: Test folders not bundled with release
-       - Fixes an issue with the live discovery of plugin models
-       - Fixes an issue with the NXcanSAS data loader
-       - Updated tutorials for SasView 4.x.y
-
-
-    - New in Version 4.1.0
-      ------------------
-      This incremental release brings a series of new features and improvements,
-      and a host of bug fixes. Of particular note are:
-
-      - Correlation Function Analysis (Corfunc)
-        This performs a correlation function analysis of one-dimensional SAXS/SANS data,
-        or generates a model-independent volume fraction profile from the SANS from an
-        adsorbed polymer/surfactant layer.
-
-        A correlation function may be interpreted in terms of an imaginary rod moving
-        through the structure of the material. G1(R) is the probability that a rod of
-        length R moving through the material has equal electron/neutron scattering
-        length density at either end. Hence a frequently occurring spacing within a
-        structure manifests itself as a peak.
-
-        A volume fraction profile \Phi(z) describes how the density of polymer
-        segments/surfactant molecules varies with distance from an (assumed locally flat)
-        interface.
-
-      - Fitting of SESANS Data
-        Data from Spin-Echo SANS measurements can now be loaded and fitted. The data will
-        be plotted against the correct axes and models will automatically perform a Hankel
-        transform in order to calculate SESANS from a SANS model.
-
-      - Documentation
-        The documentation has undergone significant checking and updating.
-
-      - Improvements
-        - Correlation function (corfunc) analysis of 1D SAS data added from CCP13
-        - File converter tool for multi-file single column data sets
-        - SESANS data loading and direct fitting using the Hankel transformation
-        - Saving and loading of simultaneous and constrained fits now supported
-        - Save states from SasView v3.x.y now loaded using sasmodel model names
-        - Saving and loading of projects with 2D fits now supported
-        - Loading a project removes all existing data, fits, and plots
-        - Structure factor and form factor can be plotted independently
-        - OpenCL is disabled by default and can be enabled through a fit menu
-        - Data and theory fields are now independently expandable
-      - Bug Fixes
-        - Fixes #667: Models computed multiple times on parameters changes
-        - Fixes #673: Custom models override built in models of same name
-        - Fixes #678: Hard crash when running complex models on GPU
-        - Fixes $774: Old style plugin models unloadable
-        - Fixes #789: stacked disk scale doesn't match cylinder model
-        - Fixes #792: core_shell_fractal uses wrong effective radius
-        - Fixes #800: Plot range reset on plot redraws
-        - Fixes #811 and #825: 2D smearing broken
-        - Fixes #815: Integer model parameter handling
-        - Fixes #824: Cannot apply sector averaging when no detector data present
-        - Fixes #830: Cansas HDF5 reader fully compliant with NXCanSAS v1.0 format
-        - Fixes #835: Fractal model breaks with negative Q values
-        - Fixes #843: Multilayer vesicle does not define effective radius
-        - Fixes #858: Hayter MSA S(Q) returns errors
-        - Numerous grammatical and contexual errors in documention
-
-
-    - New in Version 4.0.1
-      ------------------
-      This release fixes the critical bug #750 in P(Q)*S(Q).  Most damaging
-      it appears that the background term was being added to S(Q) prior to
-      multiplication by P(Q).
-
-
-    - New in Version 4.0
-      ------------------
-      This release fixes the various bugs found during the alpha and beta testing
-      - Improvements
-        - Support for reading data files from Anton Paar Saxess instruments
-        - Adds documentation on how to write custom models in the new framework
-      - Bug Fixes
-        - Fixes bug #604 Pringle model questions
-        - Fixes bug #472 Reparameterize Teubner-Strey
-        - Fixes bug #530 Numerical instabilities in Teubner Strey model
-        - Fixes bug #658 ASCII reader very broken
-
-
-    - New in Version 4.0 beta 1
-      --------------------
-      This beta adds support for the magnetic and multilevel models of 3.1.2
-      and along with a host of bug fixes found in the alpha.
-
-      - Model package changes and improvements
-         - All 3.1.2 models now available in new interface
-         - Old custom models should now still work
-            - '''NOTE:''' These will be deprecated in a future version. Old
-              custom models should be converted to the new model format which
-              is now the same as the built in models and offers much better
-              support.
-         - Custom model editor now creates new style models
-         - Custom model editor supports better error checking
-      - Documentation improvements
-        - Continued general cleanup
-      - Other improvements/additions
-         - Support for new canSAS 2D data files added
-         - Plot axes range can now be set manually as well as by zooming
-         - Plot annotations can now be moved around after being placed on plot.
-         - The active optimizer is now listed on the top of the fit panel.
-         - Linear fits now update qmin and max when the x scale limits are
-           changed.  Also the plot range no longer resets after a fit.
-      - Bug fixes
-         - Fixes bug #511 Errors in linearized fits and clean up of interface
-           including Kratky representation
-         - Fixes bug #186 Data operation Tool now executes when something is
-           entered in the text box and does not wait for the user to hit enter
-         - Fixes bug #459 plot context menu bug
-         - Fixes bug #559 copy to clipboard in graph menu broken
-         - Fixes bug #466 cannot remove a linear fit from graph
-         - Numerous bugs introduced in the alpha
-
-
-    - New in Version 4.0.0-alpha
-      --------------------
-      This alpha release brings a major overhaul of the model system. The new model
-      package allows rapid integration of custom models and access to polydispersity
-      without requiring a compiler.
-
-      - Model package changes and improvements
-         - Model interface moved to independent sasmodels package.
-         - Most models converted to new interface.
-         - Allows rapid integration of user-written models.
-         - OpenCL GPU utilization for faster fitting.
-         - Improved numerical integration of Bessel functions.
-      - SESANS integration and implementation
-         - Scripting interface added for analysis of SESANS data.
-         - Hankel transformation now accepts finite acceptance angles.
-         - 2D cosine transformation added for TOF SESANS analysis.
-      - Documentation improvements
-         - The documentation tree was restructured for a better end user experience.
-         - The documentation for each model was revamped and verified by at least
-           two people following the conversion of the model.
-         - Theoretical 1D (and 2D if applicable) scattering curves are auto-generated
-           and added to the model documentation for each model.
-      - Separation of GUI and calculations for future GUI enhancements
-      - Bug fixes
-         - Fixes bug #411 No stop button on simultaneous fit page
-         - Fixes bug #410 Error with raspberry model
-         - Fixes bug #364 Possible inconsistency in Poly_GausCoil model
-         - Fixes bug #439 Hayter Penfold MSA code needs checking
-         - Fixes bug #484 lammellerPC is precision limited
-         - Fixes bug #498 $HOME/.matplotlib conflicts
-         - Fixes bug #348 Control order in which fit parameters appear in the gui
-         - Fixes bug #456 Provide DREAM Results Panel with something to identify
-           data and age of results
-         - Fixes bug #556 Build script improvements for developers
-
-
-   - New in Version 3.1.2
-     --------------------
-     This release is a major stability improvement, having fixed a serious bug
-     that came to light since release 3.1.1. All users should upgrade.
-
-     - Fixes bug #468 broken remove constraint buttons in
-       simultaneous/constrained fitting panel
-     - Fixes bug #474 resulting from changes in 3.1.1 that had
-       introduced an error in the high-Q of slit-smeared models.
-     - Fixes bug #478 which would cause wx to run out of IDs and result
-       in SasView crashing even if left alone.
-     - Fixes bug #479 missing help button on simultaneous/constrained fit page
-     - Fixes bug #480 GUI resizing issues on simultaneous fit page
-     - Fixes bug #486 broken Report Results
-     - Fixes bug #488 redraw issues in fit page
-
-
-   - New in Version 3.1.1
-     --------------------
-     - Fixes bug #457 that prevented SasView from starting if the user was not
-       connected to the internet, or was behind a proxy server.
-
-
-   - New in Version 3.1.0
-     --------------------
-     - The documentation/help has had a complete overhaul including:
-       - A completely new presentation interface (Sphinx).
-       - Proof reading!
-       - Updating for latest features.
-       - A Help (or sometimes ?) button has been added to every panel, and some
-         sub panels if appropriate, linking to the appropriate section in the
-         documentation.
-       - The model help has been split so that the Details button now brings up
-         a very short pop-up giving the equation being used while HELP goes to
-         the section in the full documentation describing the model.
-       - Extensive help has also been added for the new optimizer engine (see
-         below) including rules of thumb on how and when to choose a given
-         optimizer and what the parameters do.
-     - The optimizer engine has been completely replaced. The new optimizer
-       still defaults to the standard Levenberg-Marquardt algorithm. However 4
-       other optimizers are now also available. Each starts with a set of default
-       parameters which can be tuned. The DREAM optimizer takes the longest but
-       is the most powerful and yields rich information including full parameter
-       correlation and uncertainty plots. A results panel has been added to
-       accommodate this.
-       - The five new optimizers are:
-         - A Levenberg-Marquardt optimizer
-         - A Quasi-Newton BFGS optimizer
-         - A Nelder-Mead Simplex optimizer
-         - A Differential Evolution optimizer
-         - A Monte Carlo optimizer (DREAM)
-     - New models were added:
-         - MicelleSphCoreModel (currently residing in the Uncategorized category)
-     - Existing models were updated:
-         - LamellarPS (bug in polydispersity integration fixed)
-         - RectangularPrismModel
-         - RectangularHollowPrismModel
-         - RectangularHollowPrismInfThinWallsModel
-     - Infrastructure to allow SESANS data to be fit with models was added. This
-       will become available in a future release but can currently be used from
-       the command line with some caveats.
-     - A number of bugs were fixed including a thread crashing issue and an
-       incorrect slit smearing resolution calculation.
-     - Implemented much more robust error logging to enable much easier
-       debugging in general but particularly the debugging of issues reported by
-       SasView users.
-     - A number of infrastructure tasks under the hood to enhance maintainability
-     - Upgrade from Wx 2.8 to Wx 3.0.2 which allows several new features but
-       required significant additional rework as well.
-     - Fully implemented Sphinx to the build process to produce both better
-       user documentation and developer documentation.
-     - Restructuring of the code base to more unified nomenclature and structure
-       so that the source installation tree more closely matches the installer
-       version tree.
-     - Code cleanup (an ongoing task) .
-     - Migration of the repository to github simplifying contributions from
-       non-project personnel through pull requests.
-
-
-   - New in Version 3.0.0
-     --------------------
-     - The GUI look and feel has been refactored to be more familiar for
-       Windows users by using MDI frames. Graph windows are also now free-
-       floating.
-     - Five new models have been added: PringlesModel, CoreShellEllipsoidXTModel,
-       RectangularPrismModel, RectangularHollowPrismModel and
-       RectangularHollowPrismInfThinWallsModel.
-     - The data loader now supports ILL DAT data files and reads the full meta
-       information from canSAS file formats.
-     - Redefined convention for specifying angular parameters for anisotropic
-       models.
-     - A number of minor features have been added such as permitting a log
-       distribution of points when using a model to simulate data, and the
-       addition of a Kratky plot option to the linear plots.
-     - A number of bugs have also been fixed.
-     - Save Project and Save Analysis now work more reliably.
-     - BETA: Magnetic contrast supporting full polarization analysis has been
-       implemented for some spherical and cylindrical models.
-     - BETA: Two new tools have been added:
-       - A generic scattering calculator which takes an atomic, magnetic or
-         SLD distribution in space and generates the appropriate 2D
-         scattering pattern. In some cases the orientationally averaged
-         (powder) 1D scattering can also be computed. Supported formats
-         include: SLD or text, PDB, and OMF magnetic moment distribution
-         file.
-       - An image viewer/converter for data in image format; this reads in
-         an image file and will attempt to convert the image pixels to
-         data. Supported formats include: TIFF, TIF, PNG, BMP, JPG.
-
-
-   - New in Version 2.2.1
-     --------------------
-     - Minor patch to support CanSAS XML v1.1 file format
-     - Added DataInfo for data in the DataExplorer and plots
-     - Added Maximize/Restore button in the title bar of the graphs
-     - Added a hide button in the toolbar of the graph panel
-     - The 'x' button now deletes a graph
-     - Edit SUM Model from the menubar can now generate and save more than one sum model
-     - Reports can now be saved in pdf format on WIN and MAC
-     - Made significant improvements to the batch/grid panel and fixed several bugs
-     - Fixed a number of other minor bugs
-
-
-   - New in Version 2.2.0
-     --------------------
-     - Application name changed to SasView
-     - New fully customizable Category Manager added for better management of
-       increasing number of models
-     - Improved the Grid Window functionality in the batch fitting mode
-     - Added a simpler Graph/Plot modification interface
-     - Added a new 'Data Operation' tool for addition, subtraction, multiplication,
-       division, of two data sets.
-     - The 'Sum Model' editor was extended and renamed 'Summation and Multiplication'
-       editor
-     - Added more plot symbols options for 1d plots
-     - Added improved trapping of compiling errors to the 'New model editor'
-     - Added some intelligent outputs (e.g., Rg, background, or rod diameter
-       depending on the choice of axis scale of the plot) to the linear fits
-     - Added more models
-
-   - Feature set from previous versions
-     -----------------------------------
-     - Perspectives Available
-       - Invariant calculator: Calculates the invariant, volume fraction, and
-         specific surface area.
-       - P(r) inversion calculator: Indirect Fourier transformation method.
-       - Fitting: the tool used for modeling and fitting 1D and 2D data to
-         analytical model functions
-       - Tools: provides a number of useful supplementary tools such as SLD
-         calculation
-     - Fitting
-       - Includes a large number of model functions, both form factors and structure factors.
-       - Support P(Q)*S(Q) for form factors that flag they can be so multiplied.
-       - Supports Gaussian, lognormal, Shulz, rectangular and custom distribution
-         functions for models that need to include polydispersity or for orientational
-         distributions if appropriate.
-       - Anisotropic shapes and magnetic moment modeling in 2D allow for a non-uniform
-         distribution of orientations of a given axis leading to modeling and fitting
-         capabilities of non azimuthaly symmetric data.
-       - User can choose to weight fits or not. If using weights, the user can choose
-         the error bar on each point if provided in the file, the square root
-         of the intensity or the intensity itself.
-       - Instrumental resolution smearing of model or fits is provided with several
-         options: read the resolution/point fromt he file. Input a pinhole resolution
-         or a slit resolution.
-       - Users can define the Qrange (Qmin and Qmax) for both 1D and 2D data for
-         fitting and modeling, but not graphically.  The range can be reset to the
-         defaults (limits of q in data set for a fit) with the reset button.
-       - A mask can be applied to 2D calculation and fitting.
-       - Normalized residual plots are provided with every fit.
-       - Model function help available through detail button or from the fitting panel.
-       - Simultaneous/(advanced)constrained fitting allows for fitting a single
-         data set or several different sets simultaneously with the application
-         of advanced constraints relating fit parameters to functions of other
-         parameters (including from a different set). For example thickness of
-         shell = sin(30) times the length.
-       - Models that are the sum of two other models can be easily generated through the
-         SUM Model menubar item.
-       - New Python models can be added on the fly by creating an appropriate Python
-         file in the model plugin directory. Two tools are provided to help:
-         An easy to use custom model editor allows the quick generation of new Python
-         models by supplying only the parameters and their default value (box 1)
-         and the mathematical function of the model (box 2) and generating the
-         necessary *.py file.  A separate advanced model editor provides a full Python
-         file editor.  Either way once saved the model becomes immediately available
-         to the application.
-       - A batch fitting capability allows for the analysis of a series of data sets to
-         a single model and provides the results in a tabular form suitable for saving
-         or plotting the evolution of the fit parameters with error bars (from within
-         the application).
-     - Tools
-       - A scattering length density calculator,including some X-ray information
-         is provided.
-       - A density to vol. fraction converter is provided
-       - In application access to a Python shell/editor (PyCrust) is provided
-       - An instrument resolution calculator, including possible gravitational and
-         TOF effects is provided
-       - A slit size calculator optimized for Anton Paar Saxess is provided.
-       - A kiessig fringe thickness calculator is provided
-     - Plots and plot management
-       - A 3D graphing option (for 2d data/results) is provided with the view
-         controlled by the mouse
-       - 2D plots are shown with an intensity color bar. 2D Color map can be user
-         adjusted.
-       - Supports output of plot to a variety of graphic formats. Supported formats
-         include: png, eps, emf, jpg/jpeg, pdf, ps, tif/tiff, rawRGBbitmap(raw, rgba),
-         and scalable vector graphic (svg/svgz)
-       - Supports ouput of data in plot (1 or 2D) to limited data formats
-       - Multiple data sets can be loaded into a single graph for viewing (but a fit
-         plot can currently only have a single plot).
-       - Extensive context sensitive plot/fitting/manipulation options are available
-         through a right mouse click pop-up menu on plots.
-     - Data management
-       - Supports 2 + column 1D ASCII data, NIST 1D and 2D data, and canSAS data
-         via plug-in mechanism which can easily allow other readers as appropriate.
-       - 2D data is expected in Q space but for historical reasons accepts the
-         NIST 2D raw pixel format and will do conversion internally.
-       - The full data and metadata available to SasView is viewable in ASCII via
-         right clicking on a data set and choosing Data Info in the DataExplorer
-         or on the plots
-       - Supports loading a single file, multiple files, or a whole folder
-       - An optional Data Explorer is provided (default) which simplifies managing,
-         plotting, deleting, or setup for computation. Most functions however do
-         not require access to the explorer/manager and can be accessed through
-         right click menus and the toolbar.  The data explorer can be re-started
-         from the menu bar.
-     - Data manipulation
-       - Support various 2D averaging methods : Circular, sectors, annular,
-         boxsum, boxQx and boxQy.
-       - A 2D data maks editor is provided
-       - 2D mask can be applied to the circular averaging.
-     - Miscellaneous features
-       - limited reports can be generated in pdf format
-       - Provides multiprocessor support(Windows only)
-       - Limited startup customization currently includes default startup
-         data folder and choice of default starting with data manager
-       - Limited support for saving(opening) a SasView project or a SasView analysis
-         (subproject) is provided.
-       - SasView can be launched and loaded with a file of interesty by double-clicking
-         on that file (recognized extension)
-       - A data file or data folder can be passed to SasView when launched from
-         the command line.
-       - Limited bookmarking capability to later recall the results of a fit calculation
-         is provided.
-       - Extensive help is provided through context sensitive mouse roll-over,
-         information bar (at the bottom of the panel), the console menu, and
-         access to the help files in several different ways.
-
-
-2- Downloading and Installing
-=============================
-
-   *** Note 1:  If you have a SasView installer (.EXE or .MSI), you do not need to 
-                worry about any of the following.  However, it is highly recommended 
-                that any previous versions of SasView are uninstalled prior to 
-                installing the new version UNLESS you are installing SasView to 
-                versioned folders.
-
-   *** Note 2:  The easiest approach to setting up the proper environment to
-                build from source is to use Conda.  Instructions for setting up
-                and using Conda can be found at:
-                  http://trac.sasview.org/wiki/DevNotes/CondaDevSetup
-                    
-   *** Note 3:  Much more information is available at www.sasview.org under 
-                links/downloads. In particular, look in the 'For Developers' section. 
-                Also have a look at http://trac.sasview.org/.
-
-   2.1- System Requirements
-        - Python version >= 2.5 and < 3.0 should be running on the system
-        - We currently use Python 2.7
-
-   2.2- Package Dependencies
-        - Ensure the required dependencies are installed
-          - For the latest list of dependencies see the appropriate yml file in
-            the SasView repo at sasview/build_tools/conda/ymls
-
-   2.3- Installing from Source
-        - Get the source code
-          - create a folder to contain the source code; if working with
-            multiple versions you might want to use versioned folder names
-            like 'sasview-x.x.x'
-          - open a command line window in the source code folder
-          - to get the CURRENT DEVELOPMENT VERSION from source control use
-              git clone https://github.com/SasView/sasview.git sasview
-              git clone https://github.com/Sasview/sasmodels.git sasmodels
-              git clone https://github.com/bumps/bumps.git bumps
-          - to get a SPECIFIC RELEASE VERSION from source control go to
-              https://github.com/SasView/sasview/releases
-            and download the required zip or tar.gz file. Unzip/untar it
-            to the source code folder.
-
-   2.4- Building and Installing         
-        - To build the code
-            use 'python setup.py build'
-        - To build the documentation
-            use'python setup.py docs'
-
-   2.5- Running SasView
-          - use 'python run.py'; this runs from the source directories, so you
-            don't have to rebuild every time you make a change, unless you are
-            changing the C model files.
-          - if using Conda the above command will also build SasView, but you 
-            must issue 'activate sasview' first.
-
-
-3- Known Issues
-===============
-
-   4.2.0 - All systems
-      There are currently no major known issues. A full list of known bugs and
-      feature requests by release version that users may wish to be aware of
-      can be viewed at http://trac.sasview.org/report/3
-      NOTE: Any corrections to models that may become known/available will be
-      posted to Marketplace as available (and fixed in the following release)
-
-   4.1- All systems:
-      The conversion to sasmodels infrastructure is ongoing and should be
-      completed in the next release. In the meantime this leads to a few known
-      issues:
-        - The way that orientation is defined is being refactored to address
-          long standing issues and comments.  In release 4.1 however only models
-          with symmetry (e.g. a=b) have been converted to the new definitions.
-          The rest (a <> b <> c - e.g. parellelepiped) maintain the same
-          definition as before and will be converted in 4.2.  Note that
-          orientational distribution also makes much more sense in the new
-          framework.  The documentation should indicate which definition is being
-          used for a given model.
-        - The infrastructure currently handles internal conversion of old style
-          models so that user created models in previous versions should continue
-          to work for now. At some point in the future such support will go away.
-          Everyone is encouraged to convert to the new structure which should be
-          relatively straight forward and provides a number of benefits.
-        - In that vein, the distributed models and those generated by the new
-          plugin model editor are in the new format, however those generated by
-          sum|multiply models are the old style sum|multiply models. This should
-          also disappear in the near future
-        - The on the fly discovery of plugin models and changes thereto behave
-          inconsistently.  If a change to a plugin model does not seem to
-          register, the Load Plugin Models (under fitting -> Plugin Model
-          Operations) can be used.  However, after calling Load Plugin Models, the
-          active plugin will no longer be loaded (even though the GUI looks like
-          it is) unless it is a sum|multiply model which works properly.  All
-          others will need to be recalled from the model dropdown menu to reload
-          the model into the calculation engine.  While it might be annoying it
-          does not appear to prevent SasView from working..
-        - The model code and documentation review is ongoing. At this time the
-          core shell parellelepiped is known to have the C shell effectively fixed
-          at 0 (noted in documentation) while the triaxial ellipsoid does not seem
-          to reproduce the limit of the oblate or prolate ellipsoid. If errors are
-          found and corrected, corrected versions will be uploaded to the
-          marketplace.
-
-   3.1- All systems:
-        - The documentation window may take a few seconds to load the first time
-          it is called. Also, an internet connection is required before
-          equations will render properly. Until then they will show in their
-          original TeX format.
-        - If the documentation window remains stubbornly blank, try installing a
-          different browser and set that as your default browser. Issues have
-          been noted with Internet Explorer 11.
-        - Check for Updates may fail (with the status bar message ' Cannot
-          connect to the application server') if your internet connection uses
-          a proxy server. Tested resolutions for this are described on the
-          website FAQ.
-        - The copy and paste functions (^C, ^V) in the batch mode results grid
-          require two clicks: one to select the cell and a second to select the
-          contents of the cell.
-        - The tutorial has not yet been updated and is somewhat out of date
-        - Very old computers may struggle to run the 3.x and later releases
-        - Polydispersity on multiple parameters included in a simultaneous/
-          constrained fit will likely not be correct
-        - Constrained/simultaneous fit page does not have a stop button
-        - Constrained/simultaneous fit do not accept min/max limits
-        - Save project does not store the state of all the windows
-        - Loading projects can be very slow
-        - Save Project only works once a data set has been associated with
-          a model.  Error is reported on status bar.
-        - There is a numerical precision problem with the multishell model when
-          the iner radius gets large enough (ticket #288)
-        - The angular distribution angles are not clearly defined and may in
-          some cases lead to incorrect calculations(ticket #332)
-
-   3.2- Windows:
-        - If installed to same directory as old version without first removing
-          the old version, the old desktop icon will remain but point to the
-          new exe version. Likewise all the start menu folders and items will
-          have the old name even though pointing to the new version.  Usually
-          safest to uninstall old version prior to installing new version anyway.
-
-   3.3- MAC:
-        - Application normally starts up hidden. Click icon in Dock to view/use
-          application.
-        - Multiprocessing does not currently work on MAC OS
-
-   3.4- Linux:
-        - Not well tested
-
-
-4- SasView website
-==================
-
-   - www.sasview.org.  This main project site is the gateway to all
-     information about the sasview project.  It includes information
-     about the project, a FAQ page and links to all developer and user
-     information, tools and resources.
-
-
-5- Frequently Asked Questions
-=============================
-
-   - www.sasview.org/faq.html
-
-
-6- Installer download website
-=============================
-
-   - Latest release Version
-     - https://github.com/SasView/sasview/releases
-   - Latest developer builds
-     - https://jenkins.esss.dk/sasview/view/Master-Builds/
