Yearn Vesting Escrow

A modified version of Curve Vesting Escrow contracts with added functionality:

An escrow can have a start_date in the past.
The first unlock can be delayed using cliff_length.
An ability to claim partial amounts or use a different beneficiary account.
An ability to open_claim and let anyone to claim for beneficiary recipient.
An ability to terminate an escrow and choose beneficiary for the unvested tokens using revoke. The recipient is still entitled to the vested portion.
An ability to use ERC20 non-compliant token, e.g. USDT.
An ability to support_vyper at escrow creation.
Factory admin controls removed, anyone can deploy escrows, funds are pulled instead of pushed.
Factory emits an event which allows finding all the escrows deployed from it.

Contracts

VestingEscrowFactory: Factory to deploy many simplified vesting contracts
VestingEscrowSimple: Simplified vesting contract that holds tokens for a single beneficiary

Usage

$ ape console --network mainnet
funder = accounts.load(name)
factory = project.VestingEscrowFactory.at('0x200C92Dd85730872Ab6A1e7d5E40A067066257cF')
factory.deployvestingcontract(token, recipient, amount, vestingduration, vestingstart, clifflength, openclaim, support_vyper, owner, sender=funder)