Implemented the remainder of argGetType
Implemented argsGetSig
Changed map types. Implemented typeGetImage
Implemented typeGetMethods, getMethodName and expType
Implemented findMethod for a particula name and signature
Implemented getting a signature for an expression
Implemented expGetCallName
Rewrote most of doExp. Looks up method for correct signature now
Implementd adding symbol to map for bind statements
Implemented objectNew
Factored out doArgs
Implemented newObject and renamed objectNew to objectNewRuntime
Slight modification to parser. Implemented code for constructing new objects