Release v0.4.0v0.4.0

This version contains these major changes:
- Refactoring of the error handling.
- Using mutability to represent changes to the device status.
- Updating the nitrokey-sys/libnitrokey dependency to version 3.5.
- Refactoring the connection management and introducing the Manager
  struct.

2 files changed, 4 insertions, 4 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c14a4a6..d4451bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,9 @@
 <!---
-Copyright (C) 2019 Robin Krahl <robin.krahl@ireas.org>
+Copyright (C) 2019-2020 Robin Krahl <robin.krahl@ireas.org>
 SPDX-License-Identifier: CC0-1.0
 -->
 
-# Unreleased
+# v0.4.0 (2020-01-02)
 - Remove the `test-pro` and `test-storage` features.
 - Implement `Display` for `Version`.
 - Introduce `DEFAULT_ADMIN_PIN` and `DEFAULT_USER_PIN` constants.
diff --git a/Cargo.toml b/Cargo.toml
index 16bd3b0..b57591b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,9 +1,9 @@
-# Copyright (C) 2019 Robin Krahl <robin.krahl@ireas.org>
+# Copyright (C) 2019-2020 Robin Krahl <robin.krahl@ireas.org>
 # SPDX-License-Identifier: CC0-1.0
 
 [package]
 name = "nitrokey"
-version = "0.4.0-alpha.3"
+version = "0.4.0"
 authors = ["Robin Krahl <robin.krahl@ireas.org>"]
 edition = "2018"
 homepage = "https://code.ireas.org/nitrokey-rs/"