Add Test::Pod to deps
update changes/readme
v1.7.2

 - minor release, packaging / update Module::Build

 [Dependencies::Added / runtime requires]
 - Test::Pod

 [Dependencies::Changed / build requires]
 - Module::Build 0.4003 → 0.4004

 [Dependencies::Changed / configure requires]
 - Module::Build 0.4003 → 0.4004

 [Documentation]
 - Sort changes previous.

 [Packaging]
 - Update to Module::Build 0.4004 to properly support test requires