* feat(hardhat-ovm): allow overriding the polling interval for the provider and its signers

The default is 50ms, which should make running the OVM tests smooth. If you want
to run tests against a remote node and do not want to overwhelm it, set the
parameter in the hardhat config's network

* chore: add changeset

* docs: add hardhat example

imported from https://github.com/ethereum-optimism/optimism-tutorial/

* ci: add deploy/deploy:ovm

* fix(contracts): wait for contracts to finish

workaround hardhat not generating build artifacts for both evm and ovm

* fix: use istanbul hard fork

* test(contracts): remove hardcoded post-state in nuisance gas test

this post state is not giving us much info, and it's hard to
update it or debug it when it does not pass for any reason
Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

* fix: update hardhat to use correct solc url

https://github.com/nomiclabs/hardhat/issues/1332\#issuecomment-818212424

* fix(core-utils): revert sentry/node version to 6.2.5

so that it's compatible with pino-sentry 0.7.0 https://github.com/aandrewww/pino-sentry/pull/25

This was required because the hardhat upgrade removed any older versions
of the dependency which were still around and could be used.

* chore: add changeset

* ci: allow tests to be run on demand

* Add hardhat-gas-reporter package and base config

* Generate an output file from gas reporter when run in CI
Selectively enable gas reporter based on ENABLE_GAS_REPORT env var

* Add gas reports to integration tests

there's a race condition somewhere in hardhat which does not generate the artifacts
in the correct directory sometimes, causing our tests to fail with 'artifact not found'

* refactor(l2geth): rename L1GasPrice to DataPrice

* feat(l2geth/rollup-gpo): allow execution price to be specified

* feat(l2geth/api): use the execution price instead of the historical gasprice

* feat(l2geth): allow configuring the l2 execution price

* fix(integration-tests): adjust gas costs to match 0-execution price

* fix(integration-tests): pin down l1 gas estimation costs to the expected values

* chore: add changeset

* fix(sync-service): adjust tests for the refactor

* feat(rollup-gasprice): make Rollup GPO methods thread safe

* contracts: fix build script

* chore: add changeset

* Update packages/contracts/scripts/build.sh
Co-authored-by: Liam Horne <liam@lihorne.com>

* build: parallel
Co-authored-by: Liam Horne <liam@lihorne.com>

* fix[contracts]: Remove unnecessary EXTCODECOPY logic

* chore[contracts]: Add changeset

* Update OVM_ExecutionManager.sol

* dtl: standardize config

* dtl: add changeset

* fix: Fix various minor linting errors not caught by CI

* Delete bright-rice-pump.md

* l2geth: correct timestamp + blocknumber in eth_call

* test: correct eth_call blocknumber + timestamp

* chore: add changeset

* fix[contracts]: Generate typechain artifacts for ovm separately

* fix[contracts]: Add ovm typechain artifacts to package json

* chore[contracts]: Add changeset

* fix[contracts]: Revert change to package.json

* feat(hh-ovm): generate typechain bindings in specific directory
Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

* refactor[contracts]: Import contracts directly from OZ

* chore[contracts]: Add changeset

* fix[integration-tests]: Update gas estimate

* remove unused utils files

* remove duplicate spec file

* remove unused imports

* move batch-submitter types to core-utils

* add changeset

Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

* feat: add sentry error context

* remove white space and changeset

* add back stackAttributeKey and remove unused logger functions

* refactor[contracts]: Remove old mock contracts

* chore[contracts]: Add changeset

* feat: let test CI run on all release branches

* style: *rc

* Add quotes around rc

* feat[contracts]: Have messengers emit events on failed relay

* chore[contracts]: Add changeset

* fix[contracts]: Correctly export typechain artifacts

* chore[contracts]: Add changeset

* contracts: add sequencer and deployer to addresses.json

* chore: add changeset

* deployer: fix configuration

* chore: add changeset

* style[contracts]: Various minor stylistic improvements

* style[contracts]: Another few tweaks

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

* contracts: remove all trailing whitespace

* chore: add changeset

* feat[smock]: Add support for hardhat 2.2.0

* refactor[smock]: Clean up some repeated code

* fix[smock]: Dynamically resolve TransactionExecutionError

* fix[smock]: Fix linting error

* fix[smock]: Use older ethers version

* fix[smock]: Minor hack for backwards compat

* chore[smock]: Add changeset

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

* export metrics in core-utils

* initialize metrics in batch submitters

* add changeset

* fix unit tests

* stub out test

* fix: getXDomainCalldata argument order to match usage

* feat: completed test

* fix: working test

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>