This change updates query strings so that they are treated as un-encoded values by default where the value represents an un-encoded value to send over the wire. A Query object then encodes the value before sending over the wire. This means that even value query string values (e.g., ":") are url encoded. This makes the Query class match PHP's http_build_query function. However, if you want to send requests over the wire using valid query string characters that do not need to be encoded, then you can provide a string to Url::setQuery() and pass true as the second argument to specify that the query string is a raw string that should not be parsed or encoded (unless a call to getQuery() is subsequently made, forcing the query-string to be converted into a Query object).