Window fail to resized when dragged

[McSinyx]

Here is a video footage:

(The high RAM usage is due to GNOME Shell leak when recording I think, not our bug 😜)

Could be because maze.resize is called quickly or slowly comparing to the resize events.

[McSinyx]

It seems to be a SDL1.2's bug. As described in pygame/pygame#201, the bug only affect GNU/Linux, Linking pygame to distro's patched SDL could be used as a workaround. Navigate pygame's wiki for more info about compilation.

Edit: README and wiki updated. Also, one might want to compile pygame with SDL2 for better performance.