refactoring: moved newly created message system in a subdir
some work
rewrote till startup flow
added extended query support
added notification support
added simple-query support
bug fixes
various changes
removed debugging (pp ...)s
simplification
worked on type readers
removed ##xxx
Various fixes
addded repl to the examples directory
added query command, use this for notifications
removed no more used flow directory
put message-readers/writers in backend/frontend files
bug fixing
fix makefile to compile in a single file lib
some forgotten include files