Changes our branching model to use release/ branches instead of
regenesis/ branches now that we no longer plan to perform any
regenesis-style upgrades. Using release/ branches will reduce confusion
from people who see a regenesis/ branch and assume (logically) that this
branch will result in a regenesis.

feat(sdk): update README and release 1.0.0

Updates the SDK README and includes a changeset that will trigger the
1.0.0 release of the SDK.

feat(sdk): support autogenerated docs

Adds a new command for automatically generating docs for the SDK. Will
be used by a new static hosted site to display SDK docs for users.

Fixes a typo in the docstring for the constructor of the
CrossChainMessenger class.

refactor(tests): migrate from smock v1 to smock v2

indexer: fix metrics, reduce DB load

changeset: cleanup packages

linting: speed up with new config

https://github.com/typescript-eslint/typescript-eslint/issues/3528

Cuts the run of linting from 68s to 44s on my local machine
with `yarn lint` at the root of the repo

This commit adds all packages in the `go` directory
to the changesets packages so that they don't need
to be added individually. It also removes `specs` since
that directory no longer exists.

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