Refactor shrinkTuple
Merge pull request #62 from jsverify/refactor-shrink-tuple

Refactor shrinkTuple
Fix typos in docs
Rewrite CONTRIBUTING.md
Use shrink.pair in arbitrary.pair
Autocurry shrink.pair and document it
Autocurried show.pair & show.tuple
Autocurried show.array
Add full stop after description of utils.merge
generator.pair and arbitrary.tuple
Merge pull request #63 from jsverify/shrink-pair

Pair and tuple related refactorings
Fix elements (shrink was not blessed)
Bump version to 0.5.0-beta.2
Update ljs version to 0.3.0
add sudo: false to .travis.yml

http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/
Update shrinks doc
Update generator doc
Update functions doc
Merge pull request #64 from jsverify/shrink-doc

Update shrinks doc
Use lazyseq in shrinkResult