Updated tokio version to 1.9

Author: Andrew J Westlake

Cargo.toml

@@ -105,7 +105,6 @@ required-features = ["tokio-runtime", "testing"]
 clap = { version = "2.33", optional = true }
 futures = "0.3"
 inventory = "0.1"
-lazy_static = "1.4"
 once_cell = "1.5"
 pyo3 = "0.14"
 pyo3-asyncio-macros = { path = "pyo3-asyncio-macros", version = "=0.14.0", optional = true }
@@ -119,6 +118,6 @@ features = ["unstable"]
 optional = true
 
 [dependencies.tokio]
-version = "1.4" 
+version = "1.9" 
 features = ["full"]
 optional = true

README.md

@@ -77,7 +77,7 @@ attribute.
 [dependencies]
 pyo3 = { version = "0.14" }
 pyo3-asyncio = { version = "0.14", features = ["attributes", "tokio-runtime"] }
-tokio = "1.4"
+tokio = "1.9"
 ```
 
 ```rust
@@ -128,7 +128,7 @@ For `tokio`:
 [dependencies]
 pyo3 = { version = "0.14", features = ["extension-module"] }
 pyo3-asyncio = { version = "0.14", features = ["tokio-runtime"] }
-tokio = "1.4"
+tokio = "1.9"
 ```
 
 Export an async function that makes use of `async-std`:
@@ -421,7 +421,7 @@ crate-type = ["cdylib"]
 pyo3 = { version = "0.14", features = ["extension-module"] }
 pyo3-asyncio = { version = "0.14", features = ["tokio-runtime"] }
 async-std = "1.9"
-tokio = "1.4"
+tokio = "1.9"
 ```
 
 ```rust