Remove explicit implementations of operator!= from our classes
Remove explicit implementations of operator!= from our classes
...and use boost::equality_comparable<> instead. Autogenerated comparison operators are less error-prone since it is more difficult to forget about them.
There are several exceptions still:
- KisSharedPtr and KoID implement their own operator to avoid inclusion of <boost/operators.hpp> everywhere.
- Python-related classes need explicit implementation (or using clause) to be compatible with sip.