Merge pull request #39 from dmb2168/master

Bringing chris_kira_SA up to date with master
Added failure tests
Merge pull request #40 from dmb2168/chris_kira_semantic_analysis

final merge to master
Added test for semantic checking
Merge branch 'master' of https://github.com/dmb2168/PLT

Merge conflict
removing tmp and old tests folder
Merge branch 'master' of https://github.com/dmb2168/PLT
Added test for conditional statements
Added test for types of function args used incorrectly in body of function
Added tests for mismatched formal and actual params
fixed return type in pointer case
Add test for tree degree mismatch
Merge branch 'master' of https://github.com/dmb2168/PLT

Merge conflict
Fixed huffman coding
added exceptions for continue and break
adjusting dfs, hw, makefile
removed doublequote from escape char options
so close
oh my god tree concatentation is working and leaves are properly set and chris dangelo and jonathan balsano are the most amazing people in the world. time for ramen :)
fixed seg fault with print