Don't call me late to stdin-ner.

Terminal has been cythonized!

The system should treat all user input as sacred. - Jef Raskin

Additional changes in v0.44.1

• Raycaster cythonized.
• Shadowcaster cythonized.
• ColorTheme and Themables enjoy yet another refactor.
• Some tweaks to sixel rendering, including glyphs visible beneath transparent sixel in some cases. More improvements incoming.
• ScrollView now has inertial scrolling (off by default). Still has room for some improvement.
• gradient can now take several colors and optional easing.
• Added DECRQM for synchronized update mode and SGR-PIXELS mouse mode, preparing to take advantage of these features if available.
• Few minor bug fixes.