2.4.dev1 release

last version in development before the official release of the stable version

to update use command: pip install -U --pre kandinsky

fixed errors raise not properly
optimised fill_polygon() method
remove the added random sleep ratio because not useful
try to get more precision for microseconds sleeps

Note for Windows users: microseconds sleep use the library "win-precise-time" to get more accurate for emulation, if is not installed it try to use another way but it's will be less accurate.

fixed the freeze bug in demo game (I forgot the lettre 'h' in line 29 xD, so the new cherry is in other variable)
added possibility to delete all build file at end building of library
fixed clear files not work in builder.py
finnaly i moved the ion ingreation into Ion-Numworks, now get_keys() raise an error if it's not installed
i forgot some field for Omega and Upsilon OS
fixed bug, all methods are normally positional-only arguments
added parameter font of draw_string() for omega and Upsilon
changed head drawing
fixed on some linux distribution, after take screenshot, opening folder start web browser

TODO:
at random time, error loop when window closed in python shell mode on Windows 10
screen refresh stops when user interact with the GUI on Windows
calculate speed for upsilon and omega methods