- Changed the way TestEZ and Rojo are required by using WaitForChild for better reliability.
- Updated subproject commits for Flipper, Promise, Roact, and TestEZ to their latest versions.
Alright, so I hate to be the one to do this, but #584 broke crates.io
publishing and also caused librojo to be unusable. I see that there was
some discussion on Discord shortly after the problem was realized, but
there was no action taken.
I think keeping librojo and publishing working far, far outweigh any
convenience added by Wally.
I've kept the same `Packages` naming convention to keep the diff
minimal.
