The `serve` command used to fallback the username parameter to
“ANONYMOUS” if it was not provided. Better is just to not set a
username if it is not provided; newly created tiddlers won’t get a
‘modifier’ field at all.
We’re introducing a mechanism that allows us to decide which tiddlers
get saved. Using `$:/core/save/all` gives all tiddlers, as before.
Using `$:/core/save/empty` gives an empty wiki. Saving an empty wiki
from tw5.com isn’t the same as the empty wiki cooked from
editions/empty because the two editions have different plugins and
other system tiddlers.
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.
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
