add Mozilla Public License Version 2.0
it's MPL 2.0, not 2.
mozilla_2_0 is not a valid meta v2 key
credit for MPL2
v0.103005

          add MPL 2.0 (thanks, Bernhard Amann)
Improve license detection

Uses license and meta names from all known Software::License::*
module to populate heuristic data.
s/4/2/ space indents
add changelog and cautionary comment
v0.103006

          try harder to identify licenses from all installed License classes;
          this is an @INC-scanning change, so be vigilant; thanks, David
          Golden!
Merge pull request #1 from rjbs/master

latest from upstream