This is an ad-hoc release that is almost identical to 0.10.34:
* work around GLib atomic ops API change
* don't use G_CONST_RETURN in public headers
* subparse: typefinding fixes for subtitles in non-UTF8 charsets
Highlights:
- support for 16-bit-per-component video formats
- playbin2 fixes and improvements for custom and non-raw sinks
- oggmux muxes based on running time now
- many other fixes and improvements