* WIP
* Fix merge corner cases
* Add test for explicit !!merge tag
* Fix tests
* Cleanup
* Cleanup
* Fix deanchoring lists
* Add test case for keeping comments
* Add MapEntrySetter and fix json marshalling after deanchoring
* Keep duplicated keys
* Move MergeTag definition to yaml alias
* Remove go-spew from api
* Add support for sequence nodes on merge tags
* Add docstring to MapEntrySetter.Key
* Add docstring to MapEntrySetter struct
* Add tests to MapEntrySetter
* Fix duplicate merge key
* Revert whitespace changes on forked go-yaml
* Remove AssocMapEntry function
* Refactoring merge order
* Return errors on VisitFields and PipeE
* Add tests for each non-conforming map merges
dropping the node style creates a compatibility issue where quotes around "on" are dropped
because yaml.v3 interprets it as a string.
other yaml parsers interpret on as a bool value, and parse it as a bool rather than string.
fix: retain the original style so it is kept as quoted.
- fmt: don't drop the styles
- merge2: keep the style when merging elements
- setting a field: if changing the value of a scalar field, retain its style by default
