Variants keys should be unique per flag, not globally

[twgraham]

When trying to create a variant for a flag where the key is default, I'm getting an error suggesting that the key needs to be unique, despite the no existing variants for the flag. I do have a variant with the key default on another flag though.

I would expect that the keys for variants should be unique per flag rather than globally, since there is no way that these variants can be used across flags.

[markphelps]

Great point and thank you for the issue! Will work on this ASAP.

[markphelps]

@twgraham this has been merged, but am planning to make some changes on how migrations are run to make them safer before cutting a new release. should have that done and a new release cut by this weekend

[twgraham]

Woohoo! Thanks @markphelps 👍