v1.0.0

Hey, welcome to the first official release of the Contract Proxy Kit!

Here's a last minute change for those following along:

execTransactions now resolves to an object with the transaction hash and a PromiEvent/TransactionResponse, and resolves before the first confirmation. This is done to square up the interface with the native Gnosis Safe WalletConnect integration (#5)

Anyway, aside from being a major version release, it also means that this project is committed to semantic versioning now.

Cheers!