Reverts #936, thus re-introducing the changes from #830.

The previous attempt to roll this out failed due to some users having invalid properties in their config files and the CLI version of the parsing not being tolerant to unknown fields. This was fixed in 2.8.2, so we can try this again now.

The first commit is a clean revert of the revert. The second commit bumps the version flag so we don't try to use the CLI to parse the config file if it is a version from before 2.8.2 which contained the aforementioned fix.

Merge / deployment checklist

• Confirm this change is backwards compatible with existing workflows.
• Confirm the readme has been updated if necessary.
• Confirm the changelog has been updated if necessary.