New TrapWidget: invisible full screen widget for catching UI events. Can
optionally display a text message at bottom left of screen (ie: "Loading..."),
used by default by Trapper:dismissable functions when no widget provided.
Added Trapper:dismissableRunInSubprocess() to run a lua function in
a sub-process, allowing it to be dismissed, and returns its return
value(s).
- Fix links to wikipedia pages containing '?oldid=123', that
wouldn't work when used back thru the API.
- Make external links to other wikipedias with a different langage
work (they didn't work when non-ascii page titles)
- Speedup download of images by using a newly added 'fast_refresh'
option to Trapper:info() to bypass UIManager.
This module provides methods for simple interaction with UI, without
the need for explicit callbacks, for use by linear jobs between
their steps.
Uses coroutines, but their usage is hidden by a simple API.
Factored out of Wikipedia:createEpubWithUI().
