Smart quotes and typographic improvements

[claviska]

Not sure if this should be a TinyMCE plugin or something built into editor.js, but I'd love to add this sooner than later.

My preferred approach is to do this on the fly like Medium as opposed to when content is rendered. This is inline editing, after all. 💪

• [ ] -- ==> en-dash
• [ ] --- ==> em-dash
• [ ] ... ==> …
• [ ] (tm) ==> ™
• [ ] (c) ==> ©
• [ ] 12x12 ==> 12×12
• [ ] Smart quotes (not as easy as it sounds)
  • opening single quote
  • closing single quote
  • opening double quote
  • closing double quote
  • prime (e.g. 1234′)
  • double prime (e.g. 1234″)
  • years (e.g. ’99)
  • apostrophe (e.g. Bob’s)