Merge pull request #391 from 06chaynes/cookie-v0.16

updates cookie to v0.16.0

Author: yoshuawuyts

Cargo.toml

@@ -43,7 +43,7 @@ async-std = { version = "1.6.0", optional = true }
 http = { version = "0.2.0", optional = true }
 
 # features: cookies
-cookie = { version = "0.14.0", features = ["percent-encode"], optional = true }
+cookie = { version = "0.16.0", features = ["percent-encode"], optional = true }
 
 # features: serde
 serde_json = { version = "1.0.51", optional = true }