Improve tests
Improve Net::NicoVideo::Content, API was changed, but it has no discernible impact on the interface with UA.
Improve tests
Improve samples
Merge branch 'recontent'
Improve Content/Response and The frame called "GINZA" is supported on Net::NicoVideo::Response::Watch.
Update docs, VERSION, Changes and MANIFEST
Fix bug about that Class::Accessor::Fast interfere with each components decorated with Decorator ..

eg $component->get() will be captured by Class::Accessor->get()