TL;DR: thank you; add hotkeys/shortcuts; can't select multiple tabs

hi :)

Thanks for this app, it is GREAT and minimalistic, but:

1. a small, but annoying bug: when I click over a tab (in sidewise window) and drag (to select multiple tabs), I just switch to tab and loose focus on Sidewise window. Now it's too complecated to select multiple tabs and not loose focus.
2. Important feature is not implemented: I cannot customize shortcuts/hotkeys, I also cannot customise action on "click once". It would be helpful, for example, if you provide event-binding tool (for example, it could be implemented in JSON, as SublimeText-settings)

Waiting for update,

Michael