This patch puts the prost, prost-build, and prost-types dependencies
together and unifies their version. This improves organization a bit in
addition to improving build time slightly, since a redundant version of
prost is now removed.
The dependencies are _not_ updated to the newest versions, because the
newest versions add a dependency on the `protoc` application, which is
not provided by cargo and thus breaks the building process.
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.
Tobias Decking
