v.0.5.0: Move Timings Impl to external lib, resolve Timings v2 Paper 1.8 support

This likely wouldn't of broke anyones code, only if they used the Timings method
in ACFUtil, but bumping just to be 'good' since it is an API break.

If you did not use the Timings in ACFUtil, then you can just bump the version
without breakages.

Timings is now handled over at https://github.com/aikar/minecraft-timings

example/acf-example.iml

@@ -36,5 +36,6 @@
     <orderEntry type="library" scope="PROVIDED" name="Maven: org.ow2.asm:asm-all:5.0.4" level="project" />
     <orderEntry type="module" module-name="acf" />
     <orderEntry type="library" name="Maven: org.jetbrains:annotations:13.0" level="project" />
+    <orderEntry type="library" name="Maven: co.aikar:minecraft-timings:1.0.0" level="project" />
   </component>
 </module>

example/pom.xml

@@ -111,7 +111,7 @@
         <dependency>
             <groupId>co.aikar</groupId>
             <artifactId>acf-core</artifactId>
-            <version>0.3.0-SNAPSHOT</version>
+            <version>0.5.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
 </project>