Merge branch 'usable-rules' of github.com:apunktbau/co4 into usable-rules
fix cpf output of interpretation (issue #95)
Merge branch 'usable-rules' of github.com:jwaldmann/co4 into usable-rules
Merge branch 'usable-rules' of github.com:apunktbau/co4 into usable-rules
data for head issue