* Keep funds with receipt holder * Counterpart is optional * Use named reserves * Tests * Benchmarks * Fixes * Update frame/nis/src/lib.rs Co-authored-by: Keith Yeung <kungfukeith11@gmail.com> * Update frame/nis/src/lib.rs Co-authored-by: Keith Yeung <kungfukeith11@gmail.com> * Update frame/nis/src/lib.rs * Update frame/nis/src/lib.rs * Update frame/nis/src/tests.rs * Update frame/nis/src/lib.rs Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> * Update frame/nis/src/lib.rs Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> * Update frame/nis/src/lib.rs Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> * Update frame/nis/src/lib.rs * Update frame/nis/src/lib.rs * Update frame/nis/src/lib.rs * Update frame/nis/src/lib.rs * Formatting Co-authored-by: Keith Yeung <kungfukeith11@gmail.com> Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>