Log Message:
ssr: update to 0.3.11

Version 0.3.11
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- Fixed FFmpeg 4.0 compatibility.
- Fixed AAC codec (missing channel layout).
- Improved build system.
- Minor bugfixes.

Version 0.3.10
--------------
- Custom recording frame to replace QRubberBand (important for Qt5).
- Improved build system.

Version 0.3.9
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- Switch to CMake build system.
- Add RGB24 support.
- Automatically add scroll bars when the screen resolution is too low to
  display the complete window.
- Improve PulseAudio latency handling of monitors.
- Add a separate checkbox to enable timestamps.
- Provide a default file name, so now all options are set to a sensible
  default value.
- Use base-10 units for bitrate for consistency with FFmpeg
  (1 kbit/s = 1000 bit/s).
- Minor bugfixes.

Version 0.3.8
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- Revert sample rate to 44.1 kHz for FLV container, since it does not support
  48 kHz.

Version 0.3.7
-------------
- Added support for latest FFmpeg/libav.
- Make relaxed GLInject permissions actually work.
- The backend now supports fragmented recording, but there is no GUI for
  this yet.
- The default audio sample rate is now 48 kHz. This makes SSR compatible
  with Opus.
- System tray icon now indicates errors during recording.