Changed to drawing to a texture

Changed so that the different states (and units) that draw to a window
draws to a rendertexture instead to make changing aspect ratio easier.
Added aspect ratio options and functions

Added so you can decide wether to force 5:3 ratio or not and support for
this in main.cpp . Also made so this can be saved as a  setting
Moved the 06-12 release to old
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Merge branch 'master' of https://github.com/Und3rtak3r/RobotSplit
Added new version of game
Made so that git ignores the settings.txt

Also added a file with some default settings, just save a copy of it as
settings.txt
Made the ignore for programming too

Has an outdated default settings file