Deprecate some ill-concieved functions: `Error`, `StatusError`, `ErrorRE`, and `StatusErrorRE`. Use `ErrorMatches` or `ErrorMatchesRE` instead. And do status checking directly.
Deprecate some ill-concieved functions: `Error`, `StatusError`, `ErrorRE`, and `StatusErrorRE`. Use `ErrorMatches` or `ErrorMatchesRE` instead. And do status checking directly.