xtest: lazy load Path::Class::Rule dependency

This will speed-up almost all dzil commands except 'xtest'.
CheckExtraTests: lazy load dependencies

This should speed-up any dzil command except 'release' because
App::Prove will not be loaded.
RunExtraTests: delay loading of App::Prove
Merge pull request #4 from dolmen/fix/lazy-load-deps

Lazy load dependencies
updated dist.ini, Changes and meta
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use Path::Tiny and Path::Iterator::Rule instead
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Changes
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these tests are run whenever tests are run, not just during "dzil test"
fix Path::Tiny error
explain how to use this command
remove wikidoc pod stuff
Changes
v0.011

    - Doc fixes (ETHER)

    - Path::Tiny fix (ETHER)
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call all builders' build methods to ensure a proper build
update dist.ini, support files, prereqs
tidied all code