Update sp.py

Spacing now really good:

In definitions, detects space of first line, and bumps whole chunk down by that.
In uses, bumps up whole chunk by space before <<<...>>>.

SO:
*** nested ***
        int spaces_before_me = 8;
!!!
    <<< nested >>> // now 4.
BECOMES:
    int spaces_before_me = 8;  // now 4.