Bump tokio to 1.0 (#337)

Co-authored-by: Artem Vorotnikov <artem@vorotnikov.me>

README.md

@@ -74,7 +74,7 @@ your `Cargo.toml`:
 ```toml
 futures = "0.3"
 tarpc = { version = "0.23.0", features = ["tokio1"] }
-tokio = "0.3"
+tokio = "1"
 ```
 
 In the following example, we use an in-process channel for communication between

example-service/Cargo.toml

@@ -18,7 +18,7 @@ env_logger = "0.8"
 futures = "0.3"
 serde = { version = "1.0" }
 tarpc = { version = "0.23", path = "../tarpc", features = ["full"] }
-tokio = { version = "0.3", features = ["full"] }
+tokio = { version = "1", features = ["full"] }
 
 [lib]
 name = "service"

tarpc/Cargo.toml

@@ -18,7 +18,7 @@ default = []
 serde1 = ["tarpc-plugins/serde1", "serde", "serde/derive"]
 tokio1 = ["tokio/rt-multi-thread"]
 serde-transport = ["serde1", "tokio1", "tokio-serde/json", "tokio-util/codec"]
-tcp = ["tokio/net", "tokio/stream"]
+tcp = ["tokio/net"]
 
 full = ["serde1", "tokio1", "serde-transport", "tcp"]
 
@@ -36,21 +36,21 @@ rand = "0.7"
 serde = { optional = true, version = "1.0", features = ["derive"] }
 static_assertions = "1.1.0"
 tarpc-plugins = { path = "../plugins", version = "0.8" }
-tokio = { version = "0.3", features = ["time"] }
-tokio-util = { optional = true, version = "0.5" }
-tokio-serde = { optional = true, version = "0.7.1" }
+tokio = { version = "1", features = ["time"] }
+tokio-util = { optional = true, version = "0.6" }
+tokio-serde = { optional = true, version = "0.8" }
 
 [dev-dependencies]
 assert_matches = "1.4"
 bincode = "1.3"
-bytes = { version = "0.6", features = ["serde"] }
+bytes = { version = "1", features = ["serde"] }
 env_logger = "0.8"
 flate2 = "1.0"
 log = "0.4"
 pin-utils = "0.1.0-alpha"
 serde_bytes = "0.11"
-tokio = { version = "0.3", features = ["full"] }
-tokio-serde = { version = "0.7.1", features = ["json", "bincode"] }
+tokio = { version = "1", features = ["full"] }
+tokio-serde = { version = "0.8", features = ["json", "bincode"] }
 trybuild = "1.0"
 
 [package.metadata.docs.rs]

tarpc/src/lib.rs

@@ -59,9 +59,9 @@
 //! your `Cargo.toml`:
 //!
 //! ```toml
-//! futures = "0.3"
+//! futures = "1.0"
 //! tarpc = { version = "0.23.0", features = ["tokio1"] }
-//! tokio = { version = "0.3", features = ["macros"] }
+//! tokio = { version = "1", features = ["macros"] }
 //! ```
 //!
 //! In the following example, we use an in-process channel for communication between