Add the optionMaybe combinator.
Improve performance of numeric parsers

by parsing to Scientific numbers
Update benchmarks
Backport Bas's number benchmarks
Drop attoparsec library dependency
Merge

--HG--
extra : amend_source : 4537d65463b25bd79dfa61bf69561497186c0a08
Drop upper bound on scientific

We hates upper bounds, precious, yes we does!
Bump version to 0.11.0.0
Bump dependency on scientific
Ignore more
Add new lookahead functions
Bump version to 0.11.1.0
Merge pull request #46 from whittle/master

Add the optionMaybe combinator
Drop optionMaybe, which duplicates Control.Applicative.optional
Add a changelog
Bump dependency on scientific
Clarify documentation for lazy bytestring and text parsers

This fixes gh-52.
Added tag 0.11.1.0 for changeset 6f4b317a12ac
Clarify docs about use of 'try' combinator
Deduplicated `try` and `<?>` into the Combinator module.