`shortcuts!`

[jhheider]

really small scale, but I miss shortcuts when they're not present. suggestions:

• cmd-[ and cmd-] for page back and page forward
• cmd-, for settings (eventually)
• cmd-/ for keyboard shortcuts display
• probably a chord for update-all; cmd-shift-a?
• probably something simple cmd-(1,2,3,4,5,6,7?) for swapping main sections
• alt(-shift)?-up/down likely useful for switching sections too

[getneil]

possibly the first ones to be implement are cmd-/, next,prev,

the rest no idea where to connect them atm