Improved key press observable to filter out events of type KEY_TYPED completely.
Fixed javadoc warnings.
Added a helper for computing relative mouse motion.
Merge window operator commit to master

This is from commit http://github.com/RallySoftware/RxJava/commit/71335e4ed1531b1542c7b304a6d3337145e0b2df
Merge branch 'OperationWindow' of https://github.com/RallySoftware/RxJava

- updated to use new OnSubscribeFunc
- updated to use super/extends generics
made WINDOW_MAKER typed
removed raw Func0s from the chunks
made the public window methods more generic via the basic (lol) super/extends fluff; also simplified api by removing a few useless super definitions (there's no super of Opening and Closing)
Merge pull request #349 from benjchristensen/window-operator

Window Operator
0.12.0-SNAPSHOT
[Gradle Release Plugin] - pre tag commit:  '0.12.0'.
[Gradle Release Plugin] - new version commit:  '0.12.1-SNAPSHOT'.
Version 0.12.0
Version 0.12.0 Changes
Pulled in all the changes from master that happened in the meantime...
removed a few unused imports
Fix Observable.window static/instance bug

- reported at https://github.com/Netflix/RxJava/pull/349#issuecomment-23946707
Merge pull request #351 from benjchristensen/window-fix

Fix Observable.window static/instance bug
Merge pull request #350 from jmhofer/swing

A little Swing wrap-up
[Gradle Release Plugin] - pre tag commit:  '0.12.1'.