0.4.0-rc.1

A detailed changelog can be found in the Changelog.md file.

Some highlights in the new version:

• Add support for Helm v3.
• Improved logging.
• Change default requested and limit resources for sidecar container and allow the user to specify them.'
• Update formula for innodb_buffer_pool_size.
• MySQL initialization from k8s services instead of individual hosts. (thanks @dougfales )