Some enhancements

- <kbd>⌘R</kbd> Adds untitled documents running capability
- <kbd>defma⇥</kbd> will trigger both `defmacro` and `defmacrop` (saved typing can partially be reinvested in choosing from the menu)
- <kbd>defm⇥</kbd> for `defmodule`
- <kbd>defr⇥</kbd> for `defrecord`
- <kbd>i⇥</kbd> for `IO.inspect($0)`
- <kbd>rec⇥</kbd> for `receive do …`
- <kbd>req⇥</kbd> for `require $0`
- <kbd>spawn⇥</kbd> for `spawn fn -> …`