Dexie v3.2.0-beta-2

Minor updates required for addons to integrate easier in db.on('ready') to give special (vip) access to the db while initial sync or authentication is still going on (before db.open() promise finally resolves, as it won't resolve until all db.on('ready') subscribers finish their work, but they themselves will need to interact with the db to finish their work).

We are still in beta until decided whether PR #1244 should be completed before determining the official API for the undocumented liveQuery() and txcommitted event.

Note however that the useLiveQuery() API is stable no matter where we decide with PR #1244 and the not yet settled API with the similar name liveQuery() that backs useLiveQuery ().