sirthias/parboiled2 — pull request #6 by alexander-myltsev (2013-06-25 15:55:37+00:00)
Title: Implement more combinators

Combinators that are implemented for now:
1. rule sequences
2. rule alternatives (firstOf)
3. `optional`
4. `zeroOrMore`
5. `oneOrMore`
6. `and-predicate` (`&`)
7. `not-predicate` (`!`)