More internal refactorings, which have made plugins that create new fields possible. Check this wikidata plugin for a demo. See its source code.

Also, compared to alpha1:

• Searching in the navigation mode (wait one second after typing).
• Support for manyCombo field type (e.g. gender for toilets).
• A new simpler style for defining element kinds for plugins.
• Updated the local country language list (thanks @alnzrv).