Move results object into ::Results.
Modify documentation for Validator::Procedural::Results.
Merge branch 'topic-result'
Make synopsis concise.
Change the word 'checker' to 'rule'.
Add ::Rule::General.
Merge branch 'topic-general-rule'
Add ::Filter::General.
Merge branch 'topic-general-filter'
Merge branch 'master'.

Conflicts:
	README.md
	lib/Validator/Procedural.pm