update extensions submodule

move git commit highlighting to cpp instead of lua extension

update extensions submodule

add clang format config

move lua and cpp syntax highlighting to cpp modules instead of lua extensions

update extensions submodule

add scroll_up and scroll_down commands

add move_to_home and insert_newline editor extension commands

add line extend and line select extension commands

fix use of nonexistent constants

use meson to build instead of cmake

update wxwidgets

Update extensions submodule

Update wxWidgets submodule

Make delete command copy to registers

Update the extensions submodule

Fix a couple memory leaks

Improve styling algorithm

This relies on a feature (coincidence?) in the tree-sitter queries that
seems to make more specific captures show up first during processing.
I should probably be verifying that the most specific capture is being
styled somehow, but it's not worth the effort at the moment. There's a
FIXME there to remind me to get back to this.

Listen to wxEVT_CHAR instead of wxEVT_KEY_DOWN to hand off input

This is so we can check for characters that are typically entered using
modifiers such as shift. Otherwise we'd have to check for specific
combinations that can't be translated well, such as Shift+5 instead of
"%", which may not be accurate for all keyboard layouts or locales.

Load functions and constants into Lua extension runtime