experimenting with compile
added improved error handling
removed raw pointers in parse
added some comments
added capture case to compile
filled error strings
push charclass...implement negation plz
added repetition
fixed merge conflicts
Added "-]" special case
ignore *.txt
char class seems pretty complete
Merge branch 'compile_experimental' of github.com:ferristseng/regex-rust into compile_experimental
formatting
added negated char classes
fixed incorrect error message
added test case
added test cases for char classes
makefile