This commit adds support for ERC20 deposits and withdrawals by introducing the
concept of token bridge adapters. This gives the SDK a standard
interface for interacting with token bridges even though the bridges may
each have slightly different internal logic.

Version Packages

Develop -> Master PR

go/batch-submitter: HTTP/2 fixes

feat: modify txmgr to send EIP-1559 txns

test: improve test coverage for aliasing

l2geth: Add berlin hardfork

Develop -> Master PR

Removes the MAX_L1_GAS_PRICE_IN_GWEI and GAS_RETRY_INCREMENT env vars,
as well as the MinL1GasPrice, MaxL1GasPrice, and GasRetryIncrement
values from the txmgr config struct.

This commit adds a fallback in case the L1 provider does not support
queries for eth_maxPriorityFeePerGas. Of our infrastructure providers,
i.e. Alchemy, Infura, Quicknode, and Hardhat (in test envs), only
Alchemy suports this call. In production, we will be routing this call
directly to Alchemy, which should work in the general case. However, if
they were to be unavailable the batch submitter would be stalled until
service was restored. This modification also allows the new EIP-1559
batch submitter to pass our integration tests, since the default Hardhat
backend can't support the query either.

Version Packages

Develop -> Master PR

fix(bss): have BSS correctly create new contexts

Revert "l2geth: berlin hardfork"

l2geth: berlin hardfork

fix(sdk): clean up tx override api

Fixes a bug in the batch submitter where new contexts were not being
correctly created for L1 to L2 transactions with a different timestamp.
This bug exists because of recent changes to L2Geth where timestamps are
now being updated more frequently.

Slightly cleans up the API for overriding transaction options. Previous
API was a bit confusing and didn't leave room for additional optional
parameters. By separating options and overrides, we can add new options
that are unrelated to transaction overrides.

feat(sdk): implement withdrawETH

This commit implements the SDK's withdrawETH function which allows users
to withdraw an amount of ETH (specified in wei) from L2 to L1.

test/docs: Improve docstrings and tests for utils in hex-strings.ts

ci: decouple rpc-proxy publishing from l2geth

ci: update version of changesets

batch-submitter: import performance

feat(sdk): implement depositETH