The refactored plugin is `tiddlyweb2` for the moment. The idea is to be
able to use the same syncer with a different adaptor for syncing
changes to the local file system.
What we have at the moment isn't really the same as TiddlyWiki
classic's shadow tiddlers, it's a much simpler system for excluding
tiddlers. We'll use the term "shadow" instead to refer to the way that
tiddlers in plugins behave, which is exactly like TiddlyWiki classic's
shadow tiddlers.
Lots of changes:
* Make the built-in server support recipes and bags, albeit there's
just one of each, called "default"
* Correctly parse returned Etag to get bag of freshly PUT tiddlers
* URI encoding for tiddler titles, so that tiddlers with slashes and so
on work OK
Thus introducing a few functional regressions, but it's going to be
easier to fix things up without the old code knocking around and
getting in the way.
"Plugins" are bundles of tiddlers managed as one, "modules" are
JavaScript tiddlers with a module type identifying when and how they
should be executed.
