ari/jobsworth — comment on commit 1dcd3729a801043ac395f7b723c3c3d540901a9e
File:  line 0
By ari:

This commit message should read:

An upgrade of devise has caused all existing sessions to become invalid. Truncating the session table is the easiest workaround. All users will simply have to log in again after upgrade.

The commit message should explain the WHY, not just be a copy of what can be plainly seen in the code.