Summary of fixes from v4.0.12 - v5.0.2

1. v5.0.2 - update function menus, add subscripts, superscripts

2. v5.0.2 - standardize exit window buttons

3. v5.0.2 - incorporate latest plplot version

4. v5.0.1 - update all documentation

5. v5.0.1 - update all test cases

6. v5.0.1 - xcrvfit packaged in starkit form, complete update of installation/development env.

7. v4.1.4 - Generalizing Installation scripts

8. v4.1.4 - Generalizing error message routines

9. v4.1.3 - Added File->Show log file item

10. v4.1.2 - implement settings for plplot window.

11. v4.1.2 - Allow user to save current settings under FILE. This way you only need to enter datafile, fitting function, starting parms, gridfit parms only once.

12. v4.1.1 - If a function is undefined when gridfitting, allow the calculation to continue. The plot will show maximum high values which notifies the user where the function is undefined. (eg XY2 when kd2 is too small). It is interesting to see the plots even when some values are undefined.

13. v4.1.1 - Add isodesmic model function of solute self association

14. v4.1.1 - Add small percentage amounts to xmax, ymax to ensure the fitting curve goes through all the points.

15. v4.1.0 - Choice of levenberg-marquardt or gaussian algorithms, user can choose to try both in case one algorithm has trouble converging to a solution.

16. - User can set maximum iterations for a fitting algorithm

17. - More descriptive error messages when convergence is not achieved.

18. v4.1.0 - Re-organize Plots menu to deal exclusively with plotting options, Analysis menu replaces Options and only deals with xcrvfit calculations.

19. v4.1.0 - Multiple Plot window is re-organized to set proper fields when a parameter option is selected. Fix bug so that changing plot configuration now updates the plots. Should be easier for the user to understand.

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