Add support for message bars (like in web browsers).
Message bars are similar to message boxes, but are not modal, and dock to the
top of the window.
Make brace matching use a color distinct from the selection color.
Make paste retain indentation and move copy and paste into the selection.
Make the home key go to the first nonspace character.
Restrict brace matching to only the matching delimiter.
(Don't match '(' with ']', for example.)
Add file path completion for CMake.
Fix the regex for floating point literals in C++.
Add paragraph wrapping for Python completion menu documentation.
Add a reference to the buffer history to the buffer itself.
Add a command to hot-reload a module.