Add chinese messages for editing/overridden a shadow tiddler
Update HelloThere
Update release note
Merge pull request #589 from BramChen/master

Add chinese messages for editing/overridden a shadow tiddler
Suppress refresh cycle if no tiddlers have changed
Clear the tiddler event queue on startup

To avoid an unnecessary refresh cycle
Add compound iterators to boot wiki object
Allow filter operators to return an iterator

Previously filter operators were only permitted to return an array of
tiddler titles
Optimise the all filter operator

Seems like quite a decent optimisation.