chore(release): prepare for 0.4.0 (#49)

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>

filtermail/CHANGELOG.md

@@ -1,3 +1,9 @@
+## 0.4.0 - 2026-02-17
+
+### Features
+
+- [**breaking**] DKIM verifier (#35)
+- Support addresses using domain literals (#42)
 ## 0.3.0 - 2026-02-14
 
 ### Features

filtermail/Cargo.lock

@@ -382,7 +382,7 @@ checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
 
 [[package]]
 name = "filtermail"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "async-trait",
  "base64",

filtermail/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "filtermail"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2024"
 license = "MIT"
 readme = "README.md"