Remove -property option from D checker
Support alternative ruby modes
get rid of Enhanced-Ruby-Mode
Merge pull request #256 from peterhoeg/master

Support alternative ruby modes
Fix headling in changelog
Update the changelog
Remove dead test cases

These test cases are for non-existing code.
Simplify version info retrieval
Merge pull request #260 from tom-tan/d-delete-property

Remove -property option from D checker