Web MIDI API test suite

Hello group!

I have now released a test suite [1] for the Web MIDI API as it's currently
specified. It's a really basic test suite to see if the features are there,
not if they work that correctly (as JS has no other means of accessing MIDI
devices, proper functionality testing is almost impossible). The test
obviously requires user input for getting the MIDIAccess object, otherwise
it's quite automatic.

In other news, I wanted ask about how W3C defines "independent
implementations of a spec", in regard of Spec Advancement[2]. Because I'm
currently working on a node module that serves the Web MIDI API for node
(and it passes the test suite, yay), I'm wondering if it counts as an
implementation? Or if midibridge does? Or are only browser engines counted?

Cheers,
Jussi

[1] https://github.com/jussi-kalliokoski/web-midi-test-suite
[2] http://www.w3.org/wiki/Spec_Advancement