version 1.20.0 "SRTP, Conference URL & TLS-DSK Improvements" (2015-08-29)
	- Feature #82: Parse HTML from Lync conference URL (Stefan Becker)
	- Feature #69: SRTP Support (Jakub Adam)
	  * requires libpurple >= 3.0.0
	- Fixed #285: Office365 rejects RC4 in TLS-DSK (Stefan Becker)
	  * added support for AES-128/256-CBC
