GFork

Added (alt/shift)+⇄ hotkeys for bigger time jumps: shift = 30 seconds, alt = 1 minute, alt+shift = 5 minutes.
⚠WARNING⚠ alt+⇄ hotkey overrides default browser navigation hotkey, so if you want to keep it, comment out the event.preventDefault() on line 248.

• Reorganized Player functionality into a class
• Fixed custom popup duplicate creation
• Added Ukrainian language to regular expressions

• Changed script execution from key press emulation to direct player access
• Added popup to indicate speed/quality change
• Reworked script invocation, so it hopefully always runs properly

v1.2

Catching up with YouTube interface updates:

• 1080p Premium is excluded from selection, now shift+q selects regular 1080p
• Updated speed selector: now takes custom speed into account, changes speed to one of the defaults
• Added x hotkey to open subtitles menu

v1.1 x hotkey for subtitles, alt+q for 480p quality, plus some readability alignments.

v1.0 basic functionality: q, s, shift+q, ctrl+q, r, +, - hotkeys.