Feature requests

Currently GitHub's public_repo Oauth flows requests read/write access to all public repos, including orgs; Begin should provide some alternate means of authorization that enables more refined scope of permissions. See also: https://begin.canny.io/feature-requests/p/more-granular-github-scopes

Add paid-tier version of Begin, presumably so everyone's clear about the value exchange and understand how we intend to keep our lights on, so we can keep their lights on.