Do a correct bugfix of typechecking.
Change events are now properly fired
Allowed escaping of keywords in QLS
Parentheses notes.
Merge branch 'kemi' of github.com:software-engineering-amsterdam/sea-of-ql into kemi
Introduced a licence header in every rsc file.

for i in $(find . -name "*.rsc"); do cat /tmp/license $i > $i.new; mv $i.new $i; done
Merge branch 'kemi' -- Progress