Refactoring session + add sampleRepeated:

- Improve SafeObserver after profiling session
- Add Observable.sampleRepeated
- Refactoring of operators
Update README.md with YourKit acknowledgement
Refactoring
Merge branch 'master' of github.com:monifu/monifu
Fix copyright header
Fix broken test
Fix bufferTimed + add bufferSizedAndTimed
Cleanup / unification
Add Monifu.js files
Add TCK tests - build fails unfortunately
Refactoring, initiated shared folder
Bump version
Build fix
Fix README
Make everything in monifu-rx shared sources between JVM and Scala.js
Add more tck tests
Bumped version
Add .combineLatest operator
Add sbt-release
Add SBT Release