Frame is already materialized

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added missing #halt primitive on Object

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Change name of parameter to make more clear the semantics of the frame

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

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Fix class path to new location of basic tests

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

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