Moved state to Observer from Observable
Merge branch 'master' into multisubscribe

Conflicts:
	rxjava-core/src/main/java/rx/operators/OperatorGroupBy.java
Merge branch 'master' into multisubscribe

Conflicts:
	rxjava-core/src/main/java/rx/operators/OperatorGroupBy.java
Merge pull request #245 from mairbek/multisubscribe

Moved state from Observable to Observer