Update cookie_store dependency (seanmonstar#1268)

* Updated `cookie_store` dependency

* Bump `cookie_store` version to `0.14.0`
* Add documentation in `cookie` module to direct users to the
  new `reqwest_cookie_store` crate for more advanced scenarios.

* update `cookie` dependency to `0.15`

* Update for `cookie_store` `v0.14.1`

* Replace usage of deprecated `cookie_store::CookieStore::get_request_cookies`
  for `cookie_store::CookieStore::get_request_values`.

* Update `cookie_store` to `v0.15.0`

The deprecation of `get_request_cookies` should have warranted a
minor version bump.

Cargo.toml

@@ -119,8 +119,8 @@ webpki-roots = { version = "0.21", optional = true }
 rustls-native-certs = { version = "0.5", optional = true }
 
 ## cookies
-cookie_crate = { version = "0.14", package = "cookie", optional = true }
-cookie_store = { version = "0.12", optional = true }
+cookie_crate = { version = "0.15", package = "cookie", optional = true }
+cookie_store = { version = "0.15", optional = true }
 time = { version = "0.2.11", optional = true }
 
 ## compression

src/cookie.rs

@@ -24,6 +24,10 @@ pub struct Cookie<'a>(cookie_crate::Cookie<'a>);
 /// This is the implementation used when simply calling `cookie_store(true)`.
 /// This type is exposed to allow creating one and filling it with some
 /// existing cookies more easily, before creating a `Client`.
+///
+/// For more advanced scenarios, such as needing to serialize the store or
+/// manipulate it between requests, you may refer to the
+/// [reqwest_cookie_store crate](https://crates.io/crates/reqwest_cookie_store).
 #[derive(Debug, Default)]
 pub struct Jar(RwLock<cookie_store::CookieStore>);
 
@@ -88,7 +92,10 @@ impl<'a> Cookie<'a> {
 
     /// The cookie expiration time.
     pub fn expires(&self) -> Option<SystemTime> {
-        self.0.expires().map(SystemTime::from)
+        match self.0.expires() {
+            Some(cookie_crate::Expiration::DateTime(offset)) => Some(SystemTime::from(offset)),
+            None | Some(cookie_crate::Expiration::Session) => None,
+        }
     }
 }
 
@@ -170,8 +177,8 @@ impl CookieStore for Jar {
             .0
             .read()
             .unwrap()
-            .get_request_cookies(url)
-            .map(|c| format!("{}={}", c.name(), c.value()))
+            .get_request_values(url)
+            .map(|(name, value)| format!("{}={}", name, value))
             .collect::<Vec<_>>()
             .join("; ");