s%0 = t%0 is working EXCLAMATION POINT EXCLAMATION POINT EXCLAMATION POINT
Merge pull request #33 from dmb2168/chris_kira_semantic_analysis

s%0 = t%0 is working EXCLAMATION POINT EXCLAMATION POINT EXCLAMATION POI...
assignment to null parts of trees cworking :) :) :)
fixed binop addition of integers in output; needed to dereference pointer b/c using child access and at
pulled all decls up to the top; for loops working again
added test 27
added test for char arithmetic
added test for tree literal to child assignment
Added test for global variables
added test for integer operations
Fixed parsing error with return statement
Added test for floating point operations
working on destory tree to clean up memory errors and leaks
added tests for mixed statements
merged
Added test for variable assignment
Added another test for variable assignment
Added another test for variable assignment
degree function with test added
Added while loop test