Change invocation to a static one

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Move constants to dedicated package

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added Blocks constant

- refactored loading to be eager while initializing the object system
- removed last dependency on universe from getClassOf(.)

Signed-off-by: Stefan Marr <git@stefan-marr.de>