0.4.22

This release includes miscellaneous sync improvements, compatibility fixes, and other bugfixes. It also includes functionality for using a new algorithm, called "golden section search", for inferring the framerate ratio between the reference and input subtitles. To use, pass the --gss flag -- it may help in some cases where subtitles are still out of sync, if the issue is that the scaling is different from the predefined ratios ffsubsync tries.