Changed to java version 1.8

pom.xml

@@ -6,9 +6,11 @@
 
     <groupId>me.finn.unlegitlibrary</groupId>
     <artifactId>unlegitlibrary</artifactId>
-    <version>1.5.1-Java1.8</version>
+    <version>1.5.2-Java1.8</version>
 
     <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -19,4 +21,18 @@
             <url>https://maven.pkg.github.com/unlegitdqrk/unlegitlibrary</url>
         </repository>
     </distributionManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 </project>