Fungible Token Lockup contract

Features

• A reusable lockup contract for a select fungible token.
• Lockup schedule can be set as a list of checkpoints with time and balance.
• Supports multiple lockups per account ID.
• Ability to create a lockup that can be terminated
  • A single lockup can be only terminated by a specific account ID.
  • Supports custom vesting schedule that should be ahead of the lockup schedule
  • The vesting schedule can be hidden behind a hash, so it only needs to be revealed in case of termnation.
• Automatic rollbacks if a FT transfer fails.
• Claiming all account's lockups in a single transaction.
• Ability to add new lockups.
• Whitelist for the accounts that can create new lockups.