This change also allows removing the dep on the palette crate,
which I found to be difficult to use (API changed often, and relied
on a lot of `.into` that was hard to follow and reconcile across
upgrades). We already pulled in the csscolorparse crate as an indirect
dep of colorgrad, so we can replace the color conversion we need for
sixel with that crate while we're in here.
refs: #1615
When set, the cursor will change to this color during dead key
or leader key processing.
```lua
return {
colors = {
dead_key_cursor = "orange",
},
}
```
refs: #686
refs: #688
This commit teaches `RgbColor::from_rgb_str` to support
colors in the form `hsl:235 100 50`, an HSL colorspace
color specification.
While banging my head on why my test wasn't passing, I realized
that this was producing 10 bpc color and the code to convert
those to RGB was incorrectly multiplying conversion terms!
refs: https://github.com/wez/wezterm/issues/1436
This commit introduces the `Dimension` type which allows specifying
a value in a variety of units; pixels, points, cells, percent.
`Dimension` needs contextual information to be evaluated as pixel
values, which makes resolving the value from the config slightly
more of a chore.
However, this type allows more flexible configurations that scale
with the font size and display dpi.
refs: #1124, #291, #195
