Small fixes to relay and client. - [Relay]: remove some `debug!` functions; - [SDK]: fix `Filter` option fields being serialized when not required (when empty); - [Client]: moved from a cli PoV to a more "functional" approach.
Small fixes to relay and client. - [Relay]: remove some `debug!` functions; - [SDK]: fix `Filter` option fields being serialized when not required (when empty); - [Client]: moved from a cli PoV to a more "functional" approach.