[clay_to_n]

If you don't want to upgrade to React v16, why would you upgrade to React 15.5.0 (which includes the new warnings)?

[mparr4]

Only reason to upgrade is if you care about the specific bug fixes [1] or have your eye on React 16.

Not interested in either? Then don't upgrade.

[1] - fixes enumerated here: https://facebook.github.io/react/blog/2017/04/07/react-v15.5...