Asking for version bump.

[jcferretti]

First of all, thanks for an excellent library.

Second, any chance we can get a version bump / new release tag? We don't want to just target "latest" for our build but at the same time want to get something a bit more recent than 0.7.0. So far what we have been doing is specifying a fixed SHA to immer in our build, so is not critical, but it would be nicer if we could just target a 0.7.1 tag (plus you selecting a point to tag that you think is a good candidate for a stable point instead of us picking a SHA sounds better).