refactor(url_base): copy operation uses reference to underlying imple…

…mentation

The copy operation from a url_view_base should use the pointed implementation rather than the underlying implementation so that url_views that refer to other urls are accounted for.

fix #872

refactor(url_base): copy operation uses reference to underlying imple…

…mentation

The copy operation from a url_view_base should use the pointed implementation rather than the underlying implementation so that url_views that refer to other urls are accounted for.

fix #872

workaround for craypp crash

fix #839

workaround for craypp crash

fix #839

docs: mrdocs.yml file patterns

docs: mrdocs.yml file patterns

docs: sync README and documentation

Update the content to match the documentation and remove old information that is currently incorrect.

fix #780

docs: sync README and documentation

Update the content to match the documentation and remove old information that is currently incorrect.

fix #780

docs: refactor variable name in url::set_params

Renamed method parameter `s` to `ps` in `url::set_params` to ensure it matches the documentation copied from `url_base::set_params`.

fix: format_args zero serialization

Fixes #758

The parsing and measuring code didn't have explicit handling for integer
zero, and the while(v > 0) loop wouldn't execute.

Also add tests to cover both of these cases.