Render state event types

[turt2live]

General:

• [x] m.room.name changes ("%user changed the room name from %old to %new")
• [x] m.room.topic changes ("%user changed the room topic from %old to %new")
• [ ] m.room.power_levels changes ("%user changed the power level of %target from %old to %new")
• [x] m.room.create
• [ ] m.room.guest_access
• [ ] m.room.history_visibility
• [ ] m.room.join_rules

Membership:

• [x] m.room.member display name changes ("%old changed their display name to %new")
• [x] m.room.member avatar changes ("%user changed their avatar")
• [x] m.room.member joins ("%user joined the room")
• [x] m.room.member invited ("%user invited %target to join the room")
• [x] m.room.member kicked ("%target was kicked from the room by %user for %reason")
• [x] m.room.member banned ("%target was banned from the room by %user for %reason")
• [x] m.room.member left ("%user left the room")
• [x] m.room.member declined invite ("%user declined to join the room")

Many of the above are implemented but may have bugs or bad code surrounding them. Some improvement in this area is greatly appreciated.