Feature request: cljr-auto-sort-project-dependencies

I enjoy having my namespace forms automatically sorted after I invoke `cljr-add-require-to-ns`. However, when I invoke `cljr-add-project-dependency`, I must then invoke `cljr-sort-project-dependencies` in order to have my project dependencies re-sorted. Would it be appropriate to add an analogous variable like `cljr-auto-sort-project-dependencies` to allow for this use case?

It seems like a pretty trivial change so I can make a pull request, but I would like to make sure there isn't anything obvious I'm missing, first.