I made a little add-on for Atom editor to aid me in Plone development. It features a slew of snippets and autocompletions, a list of what's available can be seen on the Atom.io page.
Please visit it here: https://atom.io/packages/atom-plone-snippets
Not sure if anyone is aware of this, or indeed if it's useful to anyone, but if it is let me know!
I'll continue to add snippets as I go along...