Sync Trello cards with the Mirror power-up

OP and developer at https://unito.io/ .

We've been syncing tasks/issues (GitHub, GitLab, Jira, Bitbucket, Asana, Trello, Wrike, Basecamp) for a few years. Mirror is a simpler and more targeted version of our sync -working at Trello card level- that lots of customers have been asking for.

Maybe it can be useful to some of you using Trello :) , questions welcome.