Develop

[ImmoStanke]

I rewrote the get-auth-map function to use Google REST API (instead of Java interop) and added a new type for AuthMap, which is returned by that function now. This also converts the json returned by google with keys like "access_token" to a proper clojure map with the key :access-token, which is what is expected in GoogleCtx. I'm using HTTPkit to send the requests and clojure.data.json to parse the json response. HTTPkit can easily be replaced by whatever other library you'd prefer to send HTTP requests, but it works pretty well.
Furthermore, I added a function to refresh an existing google token, which also returns an AuthMap containing the new token.
Users can also specify their own redirect-url, instead of always using copy paste, this enables you to have google send the auth-code directly to your web app. Consequently, you may also now specify your access-type as "online" or "offline". Both values are read from the google-context, defaulting to the previous functionality if none are given.

PS: Sorry for the messy commits, I worked on the master branch and then merged to develop. If you want you can also merge the master branch directly.

[takeoutweight]

Hey, this is an ridiculously late response but I want to thank you for putting together this very reasonable PR. We completely dropped the ball on maintaining this library; we're sorry for that and understand how annoying it is to get radio silence after putting work into a PR. We're currently undergoing a review of our open source policies w/ legal and, for what it's worth, should be able to respond to PRs on this project soon