This includes a hack to preserve humbug/backends.py as a symlink, so
that we don't need to regenerate all our old sessions.
(imported from commit b7918988b31c71ec01bbdc270db7017d4069221d)
Now parsed: 🍺,🍺;🍺!
If \w characters surround :foo:, we still say it's NOT an
emoji, but we used to do this for \S characters, so it's loosened up.
(imported from commit 49b33d2f0ffdcfde8947ae411a4addcf4c24af9c)
This needs to be deployed to both staging and prod at the same
off-peak time (and the schema migration run).
At the time it is deployed, we need to make a few changes directly in
the database:
(1) UPDATE django_content_type set app_label='zerver' where app_label='zephyr';
(2) UPDATE south_migrationhistory set app_name='zerver' where app_name='zephyr';
(imported from commit eb3fd719571740189514ef0b884738cb30df1320)