Bump version to 0.8.4

Author: BramBonne

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "env_logger"
 edition = "2018"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["The Rust Project Developers"]
 license = "MIT/Apache-2.0"
 readme = "README.md"

README.md

@@ -21,7 +21,7 @@ It must be added along with `log` to the project dependencies:
 ```toml
 [dependencies]
 log = "0.4.0"
-env_logger = "0.8.3"
+env_logger = "0.8.4"
 ```
 
 `env_logger` must be initialized as early as possible in the project. After it's initialized, you can use the `log` macros to do actual logging.
@@ -88,7 +88,7 @@ Tests can use the `env_logger` crate to see log messages generated during that t
 log = "0.4.0"
 
 [dev-dependencies]
-env_logger = "0.8.3"
+env_logger = "0.8.4"
 ```
 
 ```rust