* Finished working on tiling
* Changed how sprite layers work. Sprite layers are now not confined to the limits of the actual canvas but instead will decide where to draw each sprite based on the canvas offset and the sprites location
* Fixed ByRef variables of defined types causing crashes
* Fixed ArrayDim causing crashes with members of types
* Added parent references to number and string values for use with ByRef
* Added TypeArrayDim
* Added the ability to use custom types in embedded functions
* Added the ability to create types in embedded_functions.bas
* Added new output file for embedded (rcbasic_dev4.txt) that will output code to generate types
* Added defined types to byref exceptions
