Open sourcing checklist

[Narnach]

We have discovered that private gems are hard to work with from a permissions perspective across Github repositories. The code in this repository is not super secret, so we're opening it up to the public. We will not publish a gem, because we don't see this code as something that is useful in a generic way that others can build dependencies upon.

This means we need to do a few things to make this possible:

• Double check the code for internal references and (where useful) add an explanation that makes sense for outsiders to read #7
  • Update readme/documentation with more context + instructions
• Transfer some of our internal ideas here in the form of new issues, setting a roadmap for ourselves
• Run CI on main branch (instead of stable) #5
• Protect our main branch by mandating CI passes before merge (@wvengen should have permission to set this up)
• Release version 0.1.1 #4
• Make this repository public #14

Things can be checked off the list, or we can convert some to issues themselves if they become PRs or need more of their own context / decisions.

[wvengen]

I've added the status checks requirement before merging.
Note that each action is listed there separately, so when we add a new Ruby version, it needs to be added there too.

[Narnach]

I've created tickets for some ideas we had. That solves the last todo. We're now done with our open sourcing checklist 🎉

• Implement price/weight normalization behavior #16
• Identify Questionmark-specific barcodes by implementing #questionmark? #17