More automation functionality

As you might have guessed from yesterday's changelog entry, adding support for click events was a mere stepping stone for more automation shenanigans.

We've launched two new expansions to our automation functionality:

1. In addition to triggering automations on new subscriber confirmations, you can now also trigger automations on new clicks for subscribers.
2. In addition to merely sending emails as part of automations, you can now add or remove tags from subscribers!