bus: initial commit
bus: fix up corner cases
bus: cleanup
bus: only send sticky event to subscriber that just registered
bus: update build tools version
bus: fix building with new Gradle plugin
bus: start building with SDK 21
bus: fix up compiling
bus: minor refactoring
bus: remove nonnull annotation
bus: use new library naming conventions
Merge branch 'master' of github.com:tilal6991/Bus