… using v2
## Current Behavior
<!-- This is the behavior we have today -->
The `package.json` handling is split between before and after plugins so
it's confusing. Also, `package.json` nodes will get overwritten by
plugins while others won't.
## Expected Behavior
<!-- This is the behavior we should expect with the changes in this PR
-->
The `package.json` handling is merged. Also, the `package.json` nodes
will always overwrite plugins as intended.
## Related Issue(s)
<!-- Please link the issue being fixed so it gets closed when this is
merged. -->
Fixes #
