Added basic error handling for parser, added basic test cases.
Added support for code suggestions attached to errors, attached prototype suggestions to all errors currently handled.
Added basic error recovery to compiler, added simple error recovery test file.
Fixed bug in error recovery.
Fixed typechecking stage of parsing, Wyscript files are now run through typechecking before being interpreted.
Merge pull request #7 from DanielJCampbell/master

Added basic error handling for parser, added basic test cases.