Working on keyword parameters.
Merged.
Merged.
Working on translation of keyword parameters.
Factored out code.
Working on translation of keyword parameters.
Merged.
Merge branches 'keyword-parameters' and 'master' of https://github.com/cwi-swat/rascal into keyword-parameters
Merge branches 'keyword-parameters' and 'master' of https://github.com/cwi-swat/rascal into keyword-parameters
Added primitives to handle keyword parameters.
Working on translation of keyword parameters.
Added more primitives to handle keyword parameters.
Working on keyword parameters: some progress.
Merge branches 'keyword-parameters' and 'master' of https://github.com/cwi-swat/rascal into keyword-parameters
New insight.
Merge branch 'master' of https://github.com/cwi-swat/rascal into keyword-parameters
Fixed errors related to less and lessequal on values

As a side effect: failed tests now also report the arguments for which
they failed
Fixed negative (wraparound) subscripts for list, node and adt.

Also added tests for these cases.
Improvements to node subscripts/slices
Fixes to add on values.