v1.0.0a2
Cache stats when regenerating, greatly improving performance.
Rename `kb_regen_stats` to `regen_stats`.
Appease flake8.
Reorder middlewares.
Only show progbar when stdout is a tty.
Require username when assigning drinks.
version policy: Only require upgrade when (major, minor) version differ.
v1.0.0a3
Twitter: drop guest_name.
Foursquare: Skip venue validation.
v1.0.0a4