Add the concept of a tiddler table which keeps track of the current and first revisions of a tiddler.
Add the concept of a tiddler table which keeps track of the current and first revisions of a tiddler.

This should make it possible to do more efficient searches and retrievals.

Overall it tidies things up nicely.

Now to test with tiddlyspace.

If that goes well then the text column will be extracted to its
own table.

tiddlyweb/tiddlywebplugins.sqlalchemy,tiddlyweb/tiddlywebplugins.sqlalchemy