release notes for cppcheck-2.12

New checks:
- uselessOverride finds overriding functions that either duplicate code from or delegate back to the base class implementation

Improved checking:
- truncLongCastAssignment and truncLongCastReturn check additional types, including float/double/long double
- duplInheritedMember also reports duplicated member functions
- constParameter*/constVariable* checks find more instances of pointers/references that can be const, e.g. when calling library functions

GUI:

Changed interface:

Deprecations:
- The qmake build system has been deprecated and will be removed in a future version.

Other:
- "USE_QT6=On" will no longer fallback to Qt5 when Qt6 is not found.