release: 2.1.2

[spkjp]

Proposed changes

• Fix quorum related issues
• Limit payload size
• Remove signatures from transaction payload

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (improve a current implementation without adding a new feature or fixing a bug)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Build (changes that affect the build system)
• Docs (documentation only changes)
• Test (adding missing tests or fixing existing tests)
• Other... Please describe:

Checklist

• I have read the CONTRIBUTING documentation
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[ghost]

@air1one @faustbrian - please review this in the next few days. Be sure to explicitly select labels so I know what's going on.

If no reviewer appears after a week, a reminder will be sent out.

[ghost]

@supaiku0 Your pull request doesn't follow our contribution guidelines. Please review and correct it.

[ghost]

@supaiku0 The ci/circleci: test-node10-2 job is failing as of e227cf712c917818141b6731c2b00d63ecae9069. Please review the logs for more information.

Once you've pushed the fixes, the build will automatically re-run. Thanks!