Change Fusion.doCleanup to no longer be variadic

[4812571]

There is no need for Fusion.doCleanup to accept variadic arguments anymore, as one could simply pass in a table (scope) anyways.

Fusion.doCleanup(a, b, c)

Can now be expressed as:

Fusion.doCleanup({a, b, c})

This makes the implementation and especially the typing of Fusion.doCleanup much simpler.

[dphfox]

Thanks for updating the docs too!