[x] Add new math functions, from c++11 norm (erf, gamma... etc)
[x] Save user preferences:
[x] Settings
[x] Functions' and sequences' colors
[x] Implement new integrated error message system for functions and sequences.
[x] Added "Default curve color" entry in settings window: the user can now choose the default color given to any new added mathematical object.
[x] Pressing Enter after editing a cell in a data window will get the focus on the next lower cell.
[x] In data tables: selecting cells with the mouse then hitting Delete or Backspace will empty them
[x] Write help documents in English and French for the data windows (since there are a lot of hidden possibilites)
[x] Remove data rows when emptied by keyboard deletion.
[x] Bug tracking, testing
[x] Polynomial Fit move apart when the asked degree is too big: with the current way to calculate fits, the double data type is not precise enough for that: programmed a new way to calculate which is more precise, but still moves apart starting from the 20th degree.
[x] A lot of bugs fixed... (check the commits if interested)
[x] Fix scroll freeze issue
[x] Export from values table
[x] Update check module
[x] Update the website with the new version's description
Released! :laughing: