added unop and binop
Merge branch 'chris_kira_semantic_analysis' of https://github.com/dmb2168/PLT into chris_kira_semantic_analysis
added if
added id/assign, not working perfectly but compiling
added tests for if/while/for, fixed bug in for loop, added function calling, began basic tree inits
added check to binop/unop to catch tree operations
changed unop catch of tree to match on type of expr instead of operator
added print functions for atoms
work in progress; defining c library ehaders and basic tree structure
clerical adjustments

amended authorship at top of files
fixed tests for new typedefs
removed binary from readme and lorax main
renamed chris.c appropriately
after merge. needs subsequent adjustment
renamed lrxlib again will save lrxlib_old separately
added new file to save lrxlib_arrayversion
Merge pull request #14 from dmb2168/chris_kira_semantic_analysis

Kira & Chris Stub Out new lrxlib.h