Bump version for release

Author: Champii

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rock"
-version = "0.3.1"
+version = "0.4.0"
 authors = ["champii <contact@champii>"]
 edition = "2018"
 

Cargo.toml

@@ -1,4 +1,4 @@
-# Rock v0.3.1
+# Rock v0.4.0
 
 [![Rust](https://github.com/Champii/Rock/actions/workflows/rust.yml/badge.svg?branch=master)](https://github.com/Champii/Rock/actions/workflows/rust.yml)
 
@@ -11,7 +11,7 @@ No to be taken seriously (yet)
 
 ## Index
 
-- [Rock v0.3.1](#rock-v0.3.1)
+- [Rock v0.4.0](#rock-v0.4.0)
   - [Index](#index)
   - [Features](#features)
   - [Install](#install)
@@ -55,10 +55,10 @@ You will need `clang` somewhere in your $PATH
 
 Linux x86_64 only
 
-[Rock v0.3.1](https://github.com/Champii/Rock/releases/download/v0.3.1/rock) (Tested on arch, btw)
+[Rock v0.4.0](https://github.com/Champii/Rock/releases/download/v0.4.0/rock) (Tested on arch, btw)
 
 ``` sh
-wget https://github.com/Champii/Rock/releases/download/v0.3.1/rock
+wget https://github.com/Champii/Rock/releases/download/v0.4.0/rock
 chmod +x rock
 ./rock -V
 ```