heroku/heroku — pull request #853 by catsby (2013-07-24 19:15:41+00:00)
Title: Migrate pg:ps, pg:kill, and pg:killall from pg-extras

Graduate some pg-extras commands into the main CLI

- `ps`: view active queries with execution time
- `kill`: kill a query by pid
- `killall`: terminates *all* connections to the database