Update to 1.04
Add LICENSE
Fix path of perl

Upstream changes:
1.04      2013-05-08
- fix tests to work on older perls

1.03      2013-05-08
- update copyright info
- require 5.8 (let me know if this is a problem for you)
- improve tests
- hopefully fix failing test on windows
- improve code readability
- remove DEBUG for private _is_debug method

1.02      2013-05-07
- convert to dzil and adopt

(wen)