Update to 0.07
    
    - New upstream release 0.07
      - If the RELEASE_TESTING environment variable is true, then instead of
        skipping tests, Test::Requires bails out
      - Document that use Test::Requires "5.010" works
    - Switch to Module::Build flow
    - Classify buildreqs by usage
    - Package upstream's new LICENSE and README.md files
    - Drop obsoletes/provides of perl-Test-Requires-tests