Gave each thread their own individual stack pointer in the VM
Added an instruction to the VM that matches a single byte
refactored static char class table expression names
Added code that handles groups in the replace string
(for replace lib function)
Working on fixing up groups in replace
Merge branch 'master' of github.com:princjef/regex-rust
Numbered groups in replace string is working
(the lib function does have some debug prints right now)
Named groups can now be used in the replace string
Modified replace functions to return Result's
Added test cases for error return value from replace
Made tests for replacen use the Result return value
Switched the VM to reading through input byte by byte
Merged in master
fixed character class negation bug
removed new_charclass function (dead code)
Merge pull request #11 from princjef/escapedCharacters

Adding single byte escape \C
recompile test
merge in master
merge mester