Low-level access to the X11 library

Changes for 0.25 - 2023-08-21

• Resolve naming conflict with perl CORE (issue #8)
• Implement XGetKeyboardControl and struct XKeyboardState
• Allow C-style API for XTranslateCoordinates, XQueryPointer, and XGetGeometry that return values into params, while also allowing perl-style API that returns a list.
• Many documentation updates (full method coverage)
• Numerous tooling improvements and author tests
• Update to Devel:😛PPort-3.71