Merge pull request #26 from kylelin47/workin

Ton of bug fixes
RadMult
radmult
RadMult
radMult
fix some throws and ans keyword now added
small syntax fix
Merge branch 'master' of https://github.com/kylelin47/COP-Project into workin

Conflicts:
	src/MultExpression.cpp
	src/SumExpression.cpp