What is this project about?

[UlrichEckhardt]

Heya! :)

Please excuse this slightly provocative question. The reason I'm asking this is to point out that the readme has literally zero info what this does, only that it's a Psalm plugin. Think about you trying to sell this plugin to a customer (me), you would list the benefits I would get from your cool product. From a different perspective, I would want to know which of my problems your product solves.

A little bit more specific, I installed and activate this plugin. Still, I get lots of errors from PHPUnit tests, when I have a member that is not set in the constructor but in setUp(). Each time, Psalm warns me that this class invariant is not established in the constructor and I was hoping that this plugin would silence these false positives.

Can you add some documentation?

Thank you!