Here are the changelogs for The Ops SDK releases...
January 6, 2019
December 31, 2019
sdk.getInterfaceTypeto distinguish between terminal and Slack operation in user code.
November 29, 2019
Sept 26, 2019
sdk.track(tags, metadata)was not accepting
choicesproperties now accepts an object with
helpInfoproperty to display help info associated with a choice
Sept 19, 2019
autocompleteproperty which is a list of choices to fuzzy-match on.