SDK v0.2.1

What's Changed

• Use OZ's ReentrancyGuardUpgradeable in Inbox by @tkporter in #499
• Remove caching of checkpoints from the Inbox by @asaj in #523
• [Fix] Move debug and yargs types to deps by @jmrossy in #526
• Index GasPayment events in Relayer by @tkporter in #504
• Remove redundant args from dispatch event by @asaj in #527
• Add yarn version plugin by @yorhodes in #524
• Update Agents by @mattiecnvr in #547
• Fix SDK core environments artifacts by @yorhodes in #548
• Improve contracts revert messages by @yorhodes in #538
• Revert "Improve contracts revert messages" by @yorhodes in #549
• Re-add mailbox.test.ts by @asaj in #556
• No more cached checkpoints in agents by @tkporter in #550
• Move InterchainGasPaymaster from AbacusConnectionManager to AbacusConnectionClient by @asaj in #558
• Add testnet2 env by @tkporter in #564
• Deploy testnet2 contracts by @asaj in #567
• Testnet2 agent deployment by @tkporter in #568
• Standardize event naming across all contracts by @asaj in #566
• More testnet2 tweaks by @tkporter in #571
• Restore subpackage deps by @yorhodes in #578
• Relayer whitelist by @mattiecnvr in #570
• Metrics improvements by @mattiecnvr in #574
• validator: Ensure non-empty outbox on init. by @webbhorn in #586
• SDK 0.2.1 by @nambrot in #537

Full Changelog: v0.2.0...v0.2.1