add Project.toml file, add basic CI, support Colors 0.13

[t-bltg]

Please register the new version after merge, thanks !

Please enable github actions in this repo for CI to run ...

cc @timothyrenner

Could we maybe move this package to a julia organization (e.g. JuliaGraphics) in order to ease maintenance ?

[timothyrenner]

@t-bltg yes, that is a good idea. Let me see if I can figure that out.

[timothyrenner]

@t-bltg I need permission to create a repository in JuliaGraphics to transfer it. Is that something you can help me with?

[t-bltg]

Great to hear @timothyrenner, if you want you can transfer your repo to me and I will ensure that you have full admin rights once I will have transferred it to the JuliaGraphics org ?

[timothyrenner]

@t-bltg looks like you'll need to delete your fork for me to transfer this one to you.

[t-bltg]

Done !

[timothyrenner]

Transfer request sent.

[t-bltg]

Thanks, it's now living at https://github.com/JuliaGraphics/ColorBrewer.jl.

Are you able to commit directly there ?

[ViralBShah]

@t-bltg gave you ownership here

[jkrumbiegel]

Looks like the 0.4.1 version has not been tagged, yet, which holds back Colors in Makie. Is this ready to be registered or was there some other holdup?

[t-bltg]

@jkrumbiegel, JuliaRegistries/General#123104.

[jkrumbiegel]

@t-bltg perfect, thanks!