class data_converter :fromrepr:text_data_repr -> torepr:text_data_repr ->Netchannels.io_obj_channel
Creates a data conversion pipe converting fromrepr to
torepr.
For simplicity, in an `ASCII input stream the CR characters are
discarded, and the LF characters are taken as newline characters.
In an output `ASCII stream, the CR/LF sequence is correctly
created for newline characters.
