* Migrate email utils to non-static

* Migrate http utils to non-static

* Migrate net utils to non-static

* Migrate random utils to non-static

* Migrate system utils to non-static

* Migrate time utils to non-static

* Migrate xml utils to non-static

* Upgrade notes

* Update test-framework

* Fix tests

* Migrate array utils to non-static

* Migrate attribute utils to non-static

* Migrate auth utils to non-static

* Migrate config utils to non-static

* Migrate crypto utils to non-static

* Raise coverage

* Fix rebase issue

Convert to our wrapper class for assertions

* Migrate assertions to Webmozart

PSR-12 compliancy

Fix Psalm-issues in the modules-directory

I had to rename the class because 'static' is a protected keyword, but forgot to rename the file

I had to rename the class because 'static' is a protected keyword, but forgot to rename the file

I had to rename the class because 'static' is a protected keyword, but forgot to rename the file

This reverts commit ef36c5fd.

All a bit too involved right before a planned release.

Also, convert to PSR-2 where that was still lacking in these files.

(being respectful with occurences that might change the behaviour, i.e. default database prefixes)