v0.4.12

This release includes the ability to upgrade state via specification in upgrade.json and fixes a minor regression in serializing the upgrade's specification over chain config api requests.

What's Changed

• Start release cycle v0.4.12 by @aaronbuchwald in #559
• remove stderr pipelining by @ceyonur in #562
• Add ChainConfig JSON Unmarshaller by @ceyonur in #554
• Update CodeQL to v2 by @aaronbuchwald in #566
• state modifications as network upgrade by @darioush in #549
• Fix Dockerfile and add Build Image to GH Actions by @aaronbuchwald in #561
• add compatibility to readme by @darioush in #568

Full Changelog: v0.4.11...v0.4.12