Alex Crichton 8181f7fa95 Implement WebIDL callback interfaces ... This commit implements callback interfaces for WebIDL, the final WebIDL construct that we were unconditionally ignoring! Callback interfaces are implemented as dictionaries of callbacks. Single-operation callback interfaces are also expanded when flattening to accept a `Function` as well, in accordance with the WebIDL spec. New features have been added to `web-sys` for all the new callback interface types. Additionally the `EventTarget.webidl` was tweaked to not have `EventListener?` as this is required for all functional usage and there's no need to keep that sort of web browser compat here. Closes #258		2018-09-10 12:00:50 -07:00
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enabled	Implement WebIDL callback interfaces	2018-09-10 12:00:50 -07:00
unavailable_option_primitive	Revert WebIDLs with optional enum types, they are still not implemented	2018-08-03 15:59:27 -05:00