Editor Toolbar Shortcuts

#### Editor Toolbar is missing shortcuts:


For FakeVim users it can get really tedious to switch to using a mouse each time one wants to format a text. The possibility to use a toolbar with a keyboard instead of mouse could bring the editing experience to a whole new level.

#### Some of the potential solutions:

1. Configure Shortcuts in the Preferences dialog
2. Define FakeVim commands which could execute the toolbar actions
3. Support markdown or some other markup syntax, which would render in a similarly formatted text