Incorrect function call in LybraRETHVault's getAssetPrice

REENTRANCY ATTACK POSSIBLE IF THE `_feeTo` IS A MALICIOUS CONTRACT IN `FeeWrapper._chargeFeePayable()` FUNCTION

BathBuddy contract should implement methods to pause and unpause contract

User can possess less value than before when `V2Migrator.migrate` function is called to give up bathTokenV1 tokens and hold bathTokenV2 tokens