Onion skin still shows an old frame when all frames are deleted

[DanielOaks]

Not sure if this is meant to happen or not, but if I add an empty frame and then delete all other frames, the onion skin for the last filled frame I deleted still shows until I disable and then re-enable onion skins.

[juliandescottes]

Definitely an issue, thanks for reporting it :)

I'll take a look.

[DanielOaks]

No problem, thanks for the awesome tool! :)

I'm also not too experienced with Node-webkit and mostly-JS applications yet, but I'm gonna try hacking on this project. Looks really fun!