Previously, calling `.right()` on a `Gfx::Rect` would return the last
column's coordinate still inside the rectangle, or `left + width - 1`.
This is called 'endpoint inclusive' and does not make a lot of sense for
`Gfx::Rect<float>` where a rectangle of width 5 at position (0, 0) would
return 4 as its right side. This same problem exists for `.bottom()`.
This changes `Gfx::Rect` to be endpoint exclusive, which gives us the
nice property that `width = right - left` and `height = bottom - top`.
It enables us to treat `Gfx::Rect<int>` and `Gfx::Rect<float>` exactly
the same.
All users of `Gfx::Rect` have been updated accordingly.
Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).
No functional changes.
The old behavior of restarting the timer after every second click could
result in double-click-chains (or triple+ clicks), which does not feel
like the right behavior.
By resetting the double-clicking timer, you need to perform a new full
double-click to make the arrows change color again.
Instead of using the doubleclick_event this uses the current double-
click speed setting to check whether or not the colors of the double-
click icon should be inverted. This allows us to use the current (and
unsaved) setting for comparison instead of having to apply the settings
first.
