Zarel/Pokemon-Showdown-Client — pull request #245 by Quinella (2014-09-05 20:52:54+00:00)
Title: Remove support for /data-* in PMs

There is no support for /data and the like on the server for PMs, so
keeping support for /data-* is redundant... and people like (ab)using
it, so overall it's better to remove it.