OBS Multiplatform 0.8.3

Changes:
* Fixed a bug where you wouldn't be able to connect to anything again after your first connection ended
* Fixed a bug with RTMP authentication
* Fixed a crash in advanced audio properties dialog
* Fixed a potential issue where encoders might lose their service-specific settings accidentally (still might be a slight issue with it if you try to update settings in real time, will fix)
* Display a "no properties" message if there are no properties for a source
* Fixed a bug where you couldn't duplicate sources in a single scene

Mac:
* Fixed a bug where audio input/output capture sources would not update when properties were changed

Windows:
* Fixed a potential game capture hook issue that could cause crashes
