Release v2.1.3

Spellbook

• 🎉 Now resizable by grabbing right hand edge 🎉🎆🎇🎈 - I couldn't have imagined doing this a week ago lol
• New formats added to parser: <Number>Hz and <Number>ct (for cents), both translated to 1v/octave like other pitch formats.
  • I'm on the hunt for more weird ways to write pitches and/or voltages, let me know what you've seen, especially weird esoteric formats.
• Removed outdated G for "gate" syntax in presets, default text, etc.
• Fixed a bug where some double sharps/flats would not be found because normal sharp/flats within them would be found first, this should probably be something nicer than a lookup table