Modernise the code layout.
Modernise layout.
Document as_string.
Add accessors for getting query string values.
Fixed year.
The `fostlib::url::query_string` class can now also be used to parse the standard format query string on the server side.
Have the HTTP server parse into a url::query_string directly.
The HTTP server query string is also now always a `url::query_string` instance.
Merge branch 'feature/query-string' into develop