UnicodeDecodeErrorfix unicode encode error when using pipeline in combination with msgpack and lua
fix pep8
pep8 fix
Merge pull request #564 from hendrik-cliqz/fix-unicode-conversion-in-exception-handling

Fix UnicodeDecodeError in annotate_excpetion
Allow delay between watch errors

When a watcher error occurs (due to some key being
watched being mutated) the current behavior is to
immediately try again. To avoid the thundering herd
problem a delay is nice to provide to avoid these
situations by introducing a sleep period between these
types of failures.
Merge pull request #567 from harlowja/watch-delay

Allow delay between watch errors
Check if Script.sha is None. It's nonsensical to make a network call that's guaranteed to fail.wq