change loadxl.py to update first then insert
added tests for updating, persistency
change persona login error somewhat uselessly
put dev ini back to sqllite
Merge branch 'master' into persistent_store
typo
Make sqlite the default for tests again.
Make travis use postgres.
tests failing, checking master
Try another travis engine url.
No real change, suspect transient problem caused travis failure.
fix tests, set defaults
improved README
Merge branch 'master', remote branch 'origin'
Merge branch 'master' into persistent_store