deprecated pinned dependencies in magic

[YtvwlD]

yarn upgrade produces a few warnings. We should probably fix them.

warning react > fbjs > core-js@1.2.7: core-js@<2.6.8 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.

Edit: update list of warnings as of 14d3c59.

[3nt3]

We can not just yarn install core-js@2 since is a dependency of react. To update core-js we would have to update react to ^16. Updating react would cause issues with elemental (which is not updated since 2017).

Warnings:

warning " > elemental@0.6.1" has incorrect peer dependency "react@^0.14.0 || ^15.0.0".
warning " > elemental@0.6.1" has incorrect peer dependency "react-dom@^0.14.0 || ^15.0.0".
warning " > react-addons-css-transition-group@15.6.2" has incorrect peer dependency "react@^15.4.2".