+ - Fix zooming to be more intuitive [Shamus 2021]
+ - Group selection (kinda done, needs more work though) [Shamus 2020]
+ - Take movement code out of Objects and put it into top level Container
+ (actually I think this should be more of the state code handling. Have to
+ see.) [Shamus 2015ish, whenever C++ OO was ditched]
+ - Add layers [Shamus 2015ish]
+ - Add pen color/style/width to Objects [Shamus 2017ish]
+ - Fix loading and saving code [Shamus 2016ish]
+ - Manipulate Dimension [Shamus 2014-03-20]