If you have questions about the API that aren't answered in the docs or FAQ, try asking in the Gitter chatroom or on Stackoverflow.
If you've found something that looks like a bug, include a link to a minimal demo on JSFilddle, Codepen with instructions to reproduce the bug with and roughly follow the following issue description format:
Tell us what should happen
Tell us what happens instead
interact.js version: Browser name and version: Operating System: