This change is likely to break most existing scripts that call
TiddlyWiki.
TL;DR - output paths are now relative to the editions/output folder,
rather than to the current folder
See [[Notes for upgrading to 5.0.11-beta]] for details.
Getting rid of the old widget mechanism files finally gives us a payoff
for all the refactoring. Still a bit of tidying up to do, and we need
to re-introduce the animation mechanisms.
