Bump version to 0.4.0

Cargo.toml

@@ -1,21 +1,15 @@
 [package]
 name = "kadcast"
-authors = [
-  "herr-seppia <[email protected]>"
-]
-version = "0.4.0-rc.6"
+authors = ["herr-seppia <[email protected]>"]
+version = "0.4.0"
 edition = "2018"
-description ="Implementation of the Kadcast Network Protocol."
+description = "Implementation of the Kadcast Network Protocol."
 categories = ["network-programming"]
 keywords = ["p2p", "network", "kad", "peer-to-peer", "kadcast"]
 license = "MPL-2.0"
 repository = "https://github.com/dusk-network/kadcast"
 
-exclude = [
-    ".git*",
-    "ARCHITECTURE.md",
-    "architecture.jpg"
-]
+exclude = [".git*", "ARCHITECTURE.md", "architecture.jpg"]
 
 [dependencies]
 arrayvec = "0.7"
@@ -29,7 +23,7 @@ konst = "0.2"
 socket2 = "0.4"
 serde_derive = "1"
 serde = "1"
-humantime-serde ="1"
+humantime-serde = "1"
 
 [dev-dependencies]
 clap = "2.33.3"