v0.9.1.b1377

This version is a collection of small quick fixes for version 0.9.0 and it is a recommended upgrade for everyone who upgraded to 0.9.0 already.

Changes since v0.9.0.b1363:
fcd478c #774: Fix: don't fail refresh_schema if one of the refresh ops fails (Arik Fraimovich)
8473783 #773: 0.9.0 Hot Fixes (Arik Fraimovich)