wxMathPlot

I have updated the mathplot component for wxWidgets 3.2.2. I have made some improvements like :

• corrected some bugs (and probably add others lol )
• work on Linux
• rewrote some methods
• added a config window (that you can have access with the right click)
• add "view as bar" for XY functions
• add horizontal and vertical line
• add second Y axis management
• add log axis
• view fullscreen if plot is in a single frame
• add in the demo the samples of the original project
• lot of things ...
  I keep the philosophy and the structure so it was easy to update existing project (I hope !).

Documentation on codedocs : https://codedocs.xyz/GitHubLionel/wxMathPlot/

Enjoy Lionel