These changes were made since version 1.6.0 and deployed during April-May 2022
We moved all strategies to dedicated repositories:
https://github.com/tetu-io/tetu-contracts/compare/release-1.6.0...release-1.7.0
Added function claimFor(). It requires approval for the caller.
Few minor changes in PriceCalculator, Autorewarder.
New contract DepositHelper as a central entry point for all vaults.
