more work on Model opreators
update scala compiler version
change name MetaType -> TypeObject
decomment code to be removed?
rename MetaType -> TypeObject
remove loud import
strange overload removed
fix scala version not hard-coded
generated update
add metamodel.reqt for input to reqT -m
renamed MetaGen
renamed metaprog -> meta
rename metaprog -> meta
rename MetamodelGenerator -> MetaGen
rename metaprog -> meta
add parameterized metamodel for reqT -m
fix consistency in iterators delegation to elem
add metamodel GraphViz export

and some new abstract and concrete entities
rename reverse -> inverse and add new reverse

new reverse is changing order only: elems.reverse.toModel
add comment on reverse vs HashModel

TODO ???