Split out sortnaturally into a plugin

[ikiwiki] / doc / plugins / sortnaturally.mdwn

[[!template id=plugin name=sortnaturally core=1 author="[[chrysn]], [[smcv]]"]]
[[!tag type/meta]]

This plugin provides the `title_natural` [[ikiwiki/pagespec/sorting]] order,
which uses Sort::Naturally to sort numbered pages in a more natural order.