message: Even simpler Offset this way
diff: //! Offset object
  -use std::borrow::{ToOwned, Borrow};
  -
  -use crate::{IdBuf, Id};
  +use std::borrow::ToOwned;
  /// Offset object
  ///
  @@ -18,11 +16,7 @@ impl<T> Offset<T> {
  Offset::Position(position)
  }
  - pub fn for_uri<Brw, Own>(uri: &Brw) -> Offset<Brw::Owned>
  - where
  - Brw: ToOwned,
  - Own: Borrow<Brw>
  - {
  + pub fn for_uri<Brw: ToOwned>(uri: &Brw) -> Offset<Brw::Owned> {
  Offset::Uri(uri.to_owned())
  }
  }
  