* FEAT: Report blank namespaces (#187)

- blank namespace prefixes are now reported as `<no-prefix>` in the `DOC-8` message`;
- altered the `DOC-8` message to emphasise that prefixes are reported;
- refactored out collection of namespaces into a Uitls class; and
- removed trailing newline from `README` and template.

* FIX: Pre-requisite handling (#188)

- `POL-1` and `POL-2` are no longer pre-requisite rules, this means other policy rules will still run if these fail;
- cleaned up a bug in pre-requisite handling where Validation reports weren't generated;
- refactored the execution of Validation rules; and
- removed a few unused imports.

* REFACT: Tidied validator/profile calls (#189)

* REFACT: Tidied validator/profile calls

- profile is now invoked after validation rather than as a branch in CLI;
- added profiling via `ValidationReport` as half-way house before interface refactor;
- added Rule checking via `ValidationReport` and provided a simple method in `AbstractProfile` that calls existing `validate` method;
- improved some variable and method names;and
- made some CLI methods static.

* FIX: Minor style issue.

* REL: v0.14.0 (#190)

- bumped Maven version to v0.14.0;
- added updated versioned docs and README.md; and
- udpdated Maven site and JavaDocs.

* FIX: Pre-commit run. (#197)

* REL: v0.14.0

- bumped Maven version to v0.14.0;
- added updated versioned docs and README.md; and
- udpdated Maven site and JavaDocs.

* FIX: Pre-commit run.