fixes #5 - Level objects need to be allocated in the same class as they are destroyed
Removing TODOs
Removed TODO
fixes #7 - Wrote method in parser base class to convert alternate tiles to conventional tiles
fixes #10 - static const string is used for undo data validation instead of switch/case
fixes #15 - Undo data is split into the methods import, export and apply
Merge branch 'master' of https://github.com/TheComet93/chocobun