PurpleChatConversation is on its way out, but this is blocking it's removal.
The invite dialog was also removed as it will need to be updated to be aware
of adding users to existing conversations that could be group dms or even
channels.
Testing Done:
Had the turtles run this on top of the branch from r/3106
Reviewed at https://reviews.imfreedom.org/r/3105/
# UPDATING VERSION NUMBERS FOR RELEASES
#
# The version number is:
# <major>.<minor>.<micro><extra>
#
# micro += 1
#
# If any functions have been added to libpurple or Pidgin:
# micro = 0
# minor += 1
#
# If backwards compatibility has been broken in libpurple or Pidgin:
# micro = 0
# minor = 0
# major += 1
# purple_soversion += 1
#
# extra should be similar to one of the following: