CTO of Vigilant here. Does anyone have ideas on how to do versioning for an SDK that you change often? Would putting new features in a "beta" release version make sense?
Whichever versioning scheme you end up choosing, the important bit is to keep documentation for all versions. Bonus points for mentioning in the docs when a feature was first added.
Some examples off the top of my head include python docs, django, bootstrap, postgres and celery.
