Version to 7.4.0 for release

Author: mbax

README.md

@@ -42,12 +42,12 @@ public class Example {
 <dependency>
     <groupId>org.kitteh.irc</groupId>
     <artifactId>client-lib</artifactId>
-    <version>7.3.0</version>
+    <version>7.4.0</version>
 </dependency>
 ```
 
 ```groovy
-implementation "org.kitteh.irc:client-lib:7.3.0"
+implementation "org.kitteh.irc:client-lib:7.4.0"
 ```
 
 Releases are available on Maven Central.

docs/index.md

@@ -70,15 +70,15 @@ simple as adding the lines below to your pom.xml file:
 <dependency>
     <groupId>org.kitteh.irc</groupId>
     <artifactId>client-lib</artifactId>
-    <version>7.3.0</version>
+    <version>7.4.0</version>
     <scope>...</scope>
 </dependency>
 ```
 
 Or, for Gradle:
 
 ```
-implementation "org.kitteh.irc:client-lib:7.3.0"
+implementation "org.kitteh.irc:client-lib:7.4.0"
 ```
 
 ## Events

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>org.kitteh.irc</groupId>
     <artifactId>client-lib</artifactId>
-    <version>7.4.0-SNAPSHOT</version>
+    <version>7.4.0</version>
 
     <packaging>jar</packaging>