Inspects the `X-Line-Ending` header.

NewRepositoryInMemory is an in memory ach storage repository for files.

NewService creates a new concrete service.

ErrBadRouting is returned when an expected path variable is missing, which is always programmer error.

Repository is the Service storage mechanism abstraction.

Service is a REST interface for interacting with ACH file structures TODO: Add ctx to function parameters to pass the client security token.