0.12 register

[JeffFessler]

@JuliaRegistrator register()

[JuliaRegistrator]

Registration pull request created: JuliaRegistries/General/17858

After the above pull request is merged, it is recommended that a tag is created on this repository for the registered package version.

This will be done automatically if the Julia TagBot GitHub Action is installed, or can be done manually through the github interface, or via:

git tag -a v0.12.0 -m "<description of version>" 240942087693f77e22a42da6d2ae7a96e2f01ba8
git push origin v0.12.0

Also, note the warning: Version 0.12.0 skips over 0.11.0
This can be safely ignored. However, if you want to fix this you can do so. Call register() again after making the fix. This will update the Pull request.

[JeffFessler]

This tags the version where most of the plots have been isolated to test/.
Still a few left in sino_geom and prompt and jim.