BREAKING CHANGE
configured_dataclass_json has been removed in favor of a single dataclass_json decorator that optionally takes arguments.
To upgrade to this release, simply replace all occurrences of configured_dataclass_json with dataclass_json (a find-and-replace-in-all-files should suffice).
Note that the no arg version of the decorator:
@dataclass_json
class Example
...will continue to work and requires no code changes