Initial pass of instructions and some modifications to the TypeTreeBuilder to support the instructiontree.
InstructionTreeBuilder now handles modules and print statements as well as all Expressions. Test now includes all of Rectangle.maso and calculator.maso. Modules added as a Type. Module is a didrect subtype of Thing. #12 #13
Added type checking where appropriate throughout the InstructionTreeBuilder
Updated version number to 0.1.0-SNAPSHOT. Removed old symboltree, compiler, and interpreter. Added MasoCommand as the entry point for the jar with handling for 'help', 'version', and 'compile'. General improvements and bugfixes to the new IR. Closes #12, closes #13
merged 'ir' into develop, using ir for conflicts