Method 'reversion' no longer works with latest release

[SqrtNegInf]

FYI, the continued evolution of the Clifford/MultiVector code has resulted in a failure in two of your Rosettacode tasks, as using 'reversion' now fails:

No such method 'reversion' for invocant of type 'MultiVector'
  in block <unit> at Polynomial_regression line xx

The two places this occurs are Polynomial_regression and Multiple_regression

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Also, going forward you intend for use MultiVector to supersede the prior usage use Clifford?

[grondilu]

Noted. I marked the RC entries as broken.

Yes, I want the MultiVector module to be the main API from now on.