immediate: fix call in setImmediate
dom/mutation_observer: remove half-assed polyfill
dom/element: rescue everything in #css and #xpath
compatibility: move around and cleanup helpers
dom/event: setup to support the compatibility layer
compatibility: cache some heavy predicates
compatibility: cleanup some DOM compatibility
dom/node: cleanup some code and documentation
history: add support predicate
spec: update specs to latest async API
dom/event: add some compatibility code
README: update with polyfills
immediate: ensure the arguments are splatted
dom/event: check the standard event API isn't present as well
compatibility: refactor all things
spec: enable a bunch of browsers
spec: improve the runner a bit
window/view: fix typo
spec: fix matrix order
spec: try to be more resilient to random timeouts