tmenier/Flurl Flurl.4.0.0-pre4

Flurl 4.0.0-pre4

on GitHub

• AppendQueryParams method/overloads (#688), thx @Marusyk!
• BUGFIX: SetQueryParams with collection, duplicate keys should append not overwrite (#370)
• BUGFIX: False negatives with Url.IsValid (#462)

Full Changelog: Flurl.3.0.7...Flurl.4.0.0-pre4