Consider propagating upper bounds backwards

[timholy]

Now that upper bounds are getting to be commonplace, it may be worth contemplating propagating the bounds to earlier versions. I am aware that this is scary, but so is not doing it: JuliaGraphics/ColorTypes.jl#143

[fredrikekre]

Have you seen https://github.com/bcbi/RetroCap.jl?

[DilumAluthge]

Personally, I believe that we should add upper bounds to the earlier versions of all packages in the registry. But I don’t think that currently there is a lot of support for this plan.

In the meantime, you can use RetroCap to do it for all packages in your GitHub orgs.

[timholy]

Looks like RetroCap will do the job for us, definitely a star-worthy package!

I am traveling for the next couple of days so will wait to tackle this until I can deal with any fallout 😄 .