Make.Dval read : t -> string -> string optionread t key is the last known value of key.
val write : t -> string -> string -> unit Lwt.twrite t key value sets key to value.
val bindings : t -> string KeyMap.tbindings t is the bindings of t at the time of the call.
val after : t -> string KeyMap.t -> string KeyMap.t Lwt.tafter prev waits until the current bindings are different to prev and then returns the new bindings.
val got_new_commit : t -> string -> string KeyMap.t -> string KeyMap.t Lwt.tgot_new_commit t key prev either waits until a new commit (empty write) has been written to key into the qubesDB t, or the entries starting with key are different from prev. Returns the entries starting with key.