If the field is the zero value, then avoid serializing the field.
This reduces verbosity in server logs.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
Handler is like http.Handler, but returns errors. ErrHandler
converts back to an http.Handler, with added error handling
and logging.
Signed-off-by: David Anderson <dave@natulte.net>
