Class Vars and Functions added to Context.
Merge branch 'master' of https://github.com/nbsdx/CSSE404_Compilers

Conflicts:
	src/parse/typecheck.cpp
finished fixing merge shit
Added an error handle clause.
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/parse/typecheck.cpp
Merge branch 'typecheck'
Added Formals from methoddecl to the context. Added type checking for method args/return
Added typechecking to class vars
Started on the DotExpr. There's comments to explain what needs to be done. Basically set the left type on entry, eval on leave.
Starting to fix DotExpr