Added join
Fixed buglet in join binding.
Simplified types for groupByUntil, window, buffer, and empty to use Any and Nothing.
Implement some Android UI related operators

1. OperatorViewClick
2. OperatorEditTextInput
3. OperatorCompoundButtonInput
Careful With That Global Search And Replace, Eugene.
Merge pull request #786 from Netflix/docs

Careful With That Global Search And Replace, Eugene.
Merge pull request #787 from MarioAriasC/master

Fix problem with Observable.create()
improve switchOnNext description in javadocs
repair anchors in links to RxJava wiki in javadocs
Observer+Subscription -> Subscriber
Subscriber and Observer

-> Restore Observer interface
-> Subscriber implements Observer, Subscription
Merge pull request #791 from Netflix/docs

improve switchOnNext description in javadocs
get the perf source working
Added the first of the perf tests
Subject reverted to Observable+Observer

- rxjava-core is passing all unit tests
- other modules are failing
working on stuff
Restored use of Observer in most places
Fix Scala Build
Merge pull request #793 from benjchristensen/subscriber-observer

Observer + Subscriber
Add Subscription.isUnsubscribed()
Merge pull request #796 from benjchristensen/subscription-isunsubscribed

Add Subscription.isUnsubscribed()
0.17.0-SNAPSHOT

Preparing for release of 0.17