Split PurpleMessage into incoming, outgoing and system
Remove redundant write_chat and write_im implementations
Hide purple_conversation_write, use purple_conversation_write_message or purple_conversation_write_system_message instead
Fix GG11 build
Fix distcheck
Fix unity build
Fix a tcl warning
Update Polish translation
Patch for MS-TURN TCP
dialpad support

A patch from https://developer.pidgin.im/ticket/15575
Add PurpleMediaCipher enum
Add PurpleMediaAuthentication enum
Implement purple_media_set_decryption_parameters
Implement purple_media_set_encryption_parameters