Merge pull request #251 from bhariharan/unstable20

Merge 'unstable' into unstable20
Fix for RuntimeException (only one looper per thread)
Merge pull request #253 from bhariharan/master

Fix for RuntimeException (only one looper per thread)
Merge branch 'master' into unstable
Merge pull request #254 from bhariharan/unstable

Merge branch 'master' into unstable
Merge branch 'unstable' into unstable20