Remove SYSTEM_CLOCK. Use const Clock() instead.
Add setsEqual to quiver collection.
Add test for setsEqual
Version 0.19.0-dev.2. Update README.md.
Update .gitignore
Merge pull request #146 from cbracken/deprecate-system-clock

Remove SYSTEM_CLOCK. Use const Clock() instead.
Merge pull request #157 from kaendfinger/gitignore

Update .gitignore
Change signatures of implements() and classImplements()
Merge pull request #162 from google/mirrors_implements

Change signature of classImplements()
Add FutureStream
Merge pull request #164 from google/future_stream

Add FutureStream
Merge branch 'master' into heap
Merge branch 'heap' into merge-heap