Merge branch 'v4' into 'next'

Bump version to 0.4

See merge request famedly/conduit!368

Cargo.lock

@@ -406,7 +406,7 @@ checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
 [[package]]
 name = "conduit"
-version = "0.3.0-next"
+version = "0.4.0"
 dependencies = [
  "axum",
  "axum-server",

Cargo.toml

@@ -6,7 +6,7 @@ authors = ["timokoesters <timo@koesters.xyz>"]
 homepage = "https://conduit.rs"
 repository = "https://gitlab.com/famedly/conduit"
 readme = "README.md"
-version = "0.3.0-next"
+version = "0.4.0"
 rust-version = "1.56"
 edition = "2021"