Update to 0.1627
    
    - New upstream release 0.1627
      - Clarify licensing terms
      - Move verbose testing to a private module, and implement it in a way that
        doesn't require editing the Makefile after it is generated
      - Require File::Slurp instead of including it, to avoid potential problems
        like this:
        http://www.cpantesters.org/cpan/report/86a0145a-e52b-11e4-a1d1-8536eb4f9f07
      - Fix tests so that they don't prematurely delete the temp file, e.g.:
        http://www.cpantesters.org/cpan/report/3adcb600-6bf9-1014-8336-f8616735162a
      - Fix tests on Windows:
        http://www.cpantesters.org/cpan/report/482c4765-af8d-1014-8ca5-91062b825c07