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norm() currently behaves as rmwhitespace(rmspecials(rmdoubles(ccnorm(arg1))))

this has the drawback that whitespace is removed last. With fairly common vandalism edits, we have stuff like
  "G  G G G GAY!". If doubles are removed before repetition is removed, the list of G's are unrecognised. I propose to either change

        $s = $this->ccnorm( $s );
        $s = $this->rmdoubles( $s );
        $s = $this->rmspecials( $s );
        $s = $this->rmwhitespace( $s );

to

        $s = $this->ccnorm( $s );
        $s = $this->rmspecials( $s );
        $s = $this->rmwhitespace( $s );
        $s = $this->rmdoubles( $s );

or to make a new function agrNorm() (for agressive norm) that mimics the behaviour of norm, but with the second operation order, not to break backwards compatibility.