Feature Request: support hotkeys

[Roger-luo]

I feel to make editing more convenient it'd be nice to support some hotkeys, e.g I like the idea using Ctrl/Cmd+B to create new blocks, and maybe a hotkey to add begin ... end will also make things easier given this is an requirement for writing multi-line code.

I think at least the following actions that should deserve a hotkey, maybe others would have other idea:

• create new cell
• add begin ... end
• execute cell

[ixzh]

I wish for:

• hide/expand input cell(s)
• multi-selection
• cell shifting
• cell navigation
• enter to edit
• insert below/above
• cut/paste

[ixzh]

• create new cell

CTRL + ENTER?

• execute cell

SHIFT + ENTER?

[sosiristseng]

CTRL + ENTER = execute cell and add a new cell below

Edit: if the code changed. Thanks @fonsp

[fonsp]

CTRL + ENTER = execute cell if the code changed and add a new cell below

[fonsp]

#65