Log Message:
Update to 0.039
----------------
0.039           2015-04-02      T. R. Wyant
  No changes since 0.038_01.

0.038_01        2015-03-26      T. R. Wyant
  Recognize nested subscripts in interpolation.
    Thanks to Andy Lester for finding this, which actually manifested in
    Perl-Critic-Policy-Variables-ProhibitUnusedVarsStricter. The problem is
    that the actual heuristics for finding the end of an interpolation are
    undocumented, and I missed this rather-obvious case.
  Add \b{g} (= \b{gcb})