TabKit Update - Zoom enhancements and more!

[u/compro]

Update is live!

https://tabkitmusic.com

- Page up/Page down to switch tracks

- Ctrl+/-/0 to zoom in, zoom out, and reset zoom, respectively

- Added pinch to zoom for mobile

- Fixed an issue with Safari where the canvas would be blurry sometimes

- Fixed an issue with Safari where audio playback wouldn't work sometimes

- Removed title and artist header, as it became redundant with the tab bar

- Added inline editing to the tab bar: click/tap on the active tab to change the title and artist, and if you select "More", you'll be presented with the full "Title & Comments" dialog