On this code, you may see how to build `Uni`s and `Multi`s using all the available channels
-- each providing tradeoffs between features and performance.
So, here are performance characteristics of passing our `ExchangeEvent` through all the different channels -- for all `Uni`s and `Multi`s:

Uni:
    Move:
        Atomic    : 25141162.13/s ✓
        Crossbeam : 24037324.84/s ✓
        Full Sync : 31022119.53/s ✓
    Zero-Copy:
        Atomic    : 12601813.49/s ✓
        Full Sync : 14293325.70/s ✓

Multi:
    Arc:
        Atomic    : 4895761.78/s ✓
        Crossbeam : 4396567.12/s ✓
        FullSync  : 4910604.17/s ✓
    OgreArc:
        Atomic    : 4429290.48/s ✓
        FullSync  : 3879562.68/s ✓
    Reference:
        MmapLog   : 6777607.69/s ✓