v0.3.1

• [dce539042a] - chore: make sure we get an error where we expect one (Rod Vagg)
• [dde2a73215] - chore: refactor header tests to iterate over a struct (Rod Vagg)
• [2876c180ff] - chore: add header error tests (Rod Vagg)
• [5bff03e9b7] - fix: lint errors (Rod Vagg)
• [22a64d29af] - fix: go mod tidy (Rod Vagg)
• [bfb5342f54] - chore: update go.mod to 1.15 (Rod Vagg)
• [97fb3e695c] - fix: ReadHeader return value mismatch (Rod Vagg)
• [3f6c2c6dab] - update .github/workflows/go-check.yml (web3-bot)
• [a682bee975] - update .github/workflows/go-test.yml (web3-bot)
• [9d134ea620] - update .github/workflows/automerge.yml (web3-bot)