v9

Change log:

• Update default keybinds for Zoom In/Out.
• Small miscellaneous patches. @astiob
• Set rff=True when using BestSource. @sgt0
• set showprogress=False for bestsource. @jsaowji
• Hardcode edge_cutoff, remove section start cutoff. @emotion3459
• Fix findFreezeFrame OOB read causing phantom freeze-frame reports. @astiob