Update for Default Branch 7/7/2021 — HereSphere VR Video Player Steam update #404187

Fixed filename recognition for automatically loading fisheye lens settings and added "_MKX22" to the filename list ("_MKX220" also works). Added keybindings "Update AB Loop Start", "Update AB Loop End", "Update Tag Start", and "Update Tag End" which can be used when the menu is hidden. When creating a new tag track, the new tag start and end times will use the AB loop start and end times if they are valid ranges. Added new actions when holding the secondary click on the seek bar. Pressing left/right will do a tiny seek operation of 0.1 seconds backward/forward. This can be used to fine-tune AB loop or tag time ranges. Make sure to disable fast seek when using this. Pressing center will reset the AB loop start and end time to span the entire video.