More markdown shortcuts

[igordsm]

Problem

Code only has very basic markdown shortcuts.

Proposal

• Make the backticks ` work like parenthesis: adding a single backtick adds a double and selecting text and inserting a backtick surrounds the text with it. Backtick is used in markdown to create monospaced text
• Use Ctrl+Shift+1 up to Ctrl+Shift+6 for headers. Make it a toggle shortcut.
• Ctrl+Shift+P for inserting images (pictures, get it? ;). Maybe even use a file chooser to select the file.

[nevillepark]

I would also like this! More suggestions for shortcuts:

• Ctrl+Shift+' (Ctrl+") for blockquoting the current paragraph or selected text (that is, putting a > at the start of each line)
• Ctrl+` for wrapping a paragraph/selected text in ``` to create a code block