Feature Request: Add async support

[pjz]

It would be nice to have an async version of the API.

[pjz]

I needed this for a (now cancelled) project. I got a reasonable start done but not fully done; it's at https://gist.github.com/pjz/b9acea22957ef73e6511318ad25b195d . I think the other main thing that needs tweaking is likely the templates need the 'async' keyword added to some method signatures. Anyway, as I said, that project is cancelled, but maybe someone will stumble on this to start from.

[titusz]

@pjz thanks for the suggestion. I currently have no use for an async version. I will pick up on your gist if that changes.

If someone else is interested in contributing a working async implementation I am happy to test/review/merge a pull request. Therefore I leave the issue open as up for grabs.