This adds the `\` character to the list of characters which will
terminate matches in Alacritty's default hint for URL recognition.

This is only an update to the development version and does not represent
a stable release.

This also changes its license to MIT along the way.

This patch applies all major and minor version bumps, with the exception
of `unicode-width` since it will need to be handled separately for
Unicode version 16.

This is only an update to the development version and does not represent
a stable release.

This patch adds a daemon mode to Alacritty which allows starting the
Alacritty process without spawning an initial window.

While this does not provide any significant advantage over the existing
behavior of always spawning a window, it does integrate nicer with some
setups and is a pretty trivial addition.

Avoid collisions with IMEs by using ctrl+shift+o. ctrl+shift+u is bound
to open unicode input in a lot of IMEs by default meaning that users
won't ever see the url hints UI.