Rename `scope`, `getScope()`, etc to `composite`, `getComposite()`, etc.
Rename `scope`, `getScope()`, etc to `composite`, `getComposite()`, etc.

Refactor `sprockets.matches`, `sprockets.closest`, `getSprocketRule()`,
`getMatchingSprocketRule()`.

meekostuff/DOMSprockets,meekostuff/DOMSprockets