More progress��� I will commit it after the CI is working again.
- fix #usingMethods for non installed Slots
- not yet completely working PropertySlot implementation (will add issue tracker entries for what is missing)
- move example Slots to Slots-Examples
- rename TestSlot and move it to Slots-Examples
I added Project on the issue tracker for all Slot related issues. I will add everything there that needs to be done.
I will do the same for Reflectivity later (the idea is to now have progress there every day, too).