Version Packages

Develop -> Master

batch-submitter: Remove bad changeset, remove old build

feat: indexer service to replace etherscan dependency

Develop -> Master

cleanup(contracts): remove unused code

Develop -> Master

l2geth: Add support for system addresses

Adds support for system addresses.

To deploy to a system address, the deployer must either be in the list of hardcoded addresses described in `SystemAddressDeployers`, or be specified via the `SYSTEM_ADDRESS_0_DEPLOYER`/`SYSTEM_ADDRESS_1_DEPLOYER` environment variables. The hardcoded system addresses deployers will always override those placed in the environment, so specifying the `SYSTEM_ADDRESS_*` env vars on mainnet, Kovan, or Goerli is a no-op. The env vars are available primarily for testing purposes.

The contract deployment **must** be the first transaction from the deployment address - i.e., it must have nonce zero.

In order to make the tests work, I had to change the integration tests chain ID to no longer conflict with Goerli. The new integration tests chain ID is `987`.

Co-Authored-By: @inphi

Removes functions and constants that are not used in the contracts
package. Also removes export from interfaces that are not being imported.

fix(ct): remove yargs as unused dep

feat(sdk): add fn to wait for message status

feat: remove packages/batch-submitter

Removes yargs as a dependency from the contracts package since it wasn't
being used. Always good to cut unused dependencies.

Adds a function to the SDK (waitForMessageStatus) which will wait until
the status of a particular message matches the target status.
waitForMessageStatus also handles certain special cases where different
status messages are incompatible (e.g., the RELAYED and
FAILED_L1_TO_L2_MESSAGE status for L1 to L2 messages). Useful to avoid
including looping logic in your own application.

fix(bridge): Corrected a comment

fix(rhc): fix dockerfile bug

contracts: fetch batches hardhat task

increase coverage of contracts package

This commit increases the statement and branch coverage of the contracts
package. More specificall the contracts that were covered are:

- AddressDictator
- ChugSplashDictator
- L1CrossDomainMessenger
- L1StandardBridge
- CanonicalTransactionChain
- ChainStorageContainer
- StateCommitmentChain
- L2CrossDomainMessenger
- L2StandardBridge
- WETH9
- Lib_OVMCode
- Lib_RLPWriter
- Lib_SecureMerkleTrie
- Lib_Buffer
- Lib_MerkleTree

Allows for easy serialization and display in frontends
or for data collection

Adds a hardhat task to fetch batches. Logs are written
to stderr so that the stdout can be written to a file
or passed to `jq`.

```bash
export CONTRACTS_TARGET_NETWORK=...
export CONTRACTS_DEPLOYER_KEY=...
export CONTRACTS_RPC_URL=...
npx hardhat fetch-batches --network main --start 14311261
```

integration-tests: Fix merge issue

readme: update docs around doing releases

Remove unnecessary contract references in integration-tests

feat: always run go unit tests/golangci-lint on every PR

feat: typed batches and batch compression