replace default query parser serializer

[Guria]

I'd like to use urlon which is an url-safe version of JSON.stringify/parse with rudy.
But it seems I can't completely override function to serialize/parse whole query but only it's parts one-by-one separately :(

docs-old and actual flow-types has mention of querySerializer but its support seems to be removed in rudy implementation

[hedgepigdaniel]

The option names have changed, but customising query serialization is still very much supported.

options.parseSearch and options.stringifyQuery default to parse and stringify from the qs package, with the exception that in parsing, parseable numbers come out as numbers rather than strings.

I'll leave this issue open until we get the documentation up to date.

[Guria]

is there a reason to have different suffixes Search and Query here?