heroku/heroku — pull request #1207 by deafbybeheading (2014-09-15 16:14:00+00:00)
Title: Use server-side connection reset endpoint for pg:killall

This lets users kill all their existing connections even when they
have no remaining connections on their given database plan, preventing
a chicken-and-egg problem in some situations.

This moves a feature that we've been testing in pg-extras into the main toolbelt. The corresponding pg-extras code will be removed.