Previously, when `hex_to_hsla` was called with a color string using the
#rgb format, the expansion
did not add alpha values, leading to an incorrect result. This patch
fixes the issue.
In addition to that, parsing has been reworked, and the new function no
longer makes
calls to the global allocator in addition to generation much smaller
code. Parsing should
therefore be a bit more performant.
This practice makes it difficult to locate todo!s in my code when I'm
working. Let's take out the bang if we want to keep doing this.
Release Notes:
- N/A
