Include PLY package and basic regex example
Add ENFABuilder with simple() and rename()
Use sets inside ENFA
Implement ENFABuilder.concat
Implement ENFABuilder.repeat
Implement full stack with ALPHA and STAR
Make regex parser portable
ENFAToDFAConverter inputs ENFA and outputs DFA objects
Fix table filling algorithm
Fix table filling again
Add run-re.py
Fix table filling with unreachable state
Add parenthesis to regex
Merge test-enfa into test-re
Remove run-enfa
Implemente ENFABuilder.union
Add BAR to regex
Add PLUS and QUESTION, ENFABuilder.empty
Add DOT, BACKSLASH, ENFABuilder.chars
Update README.md to Proj2 RE