remove added
Added primitives lrel_add_elm and lrel_subtract_elm. Fixes #540.
Merge branch 'master' of https://github.com/cwi-swat/rascal.git
Partial fix for #543: the compiler did not handle escaped characters
well in string templates

The  first example seems to be ok in the compiler, but here the
interpreter is at fault.
Added tests related to the desired semantics of keyword parameters.
Merge branch 'master' of https://github.com/cwi-swat/rascal.git
Merge branch 'master' into constructor-keyword-parameters