Review of jyasskin's draft

[annevk]

I reviewed https://rawgit.com/jyasskin/permissions/allow-choosers/index.html

1. Everything that is associated with a permission should default to the "binary" (rename to boolean?) options. There's no need to repeat that for each of them.
2. Since the majority are boolean, there should be a simple way to get and set the state of boolean permissions. See https://notifications.spec.whatwg.org/ for how simple this can be.
3. permissions.request() should not be available in workers I think.

[jyasskin]

I've done (1) in #66; the rest should wait for separate PRs.

[marcoscaceres]

2 above is duplicate of #42 ... 1 was done in #66, and 3 doesn't apply as there is no .request().