Reduce compilation warnings

core/pom.xml

@@ -255,6 +255,20 @@
                             <include>xyz.upperlevel.spigot.book:spigot-book-api</include>
                         </includes>
                     </artifactSet>
+                    <filters>
+                        <filter>
+                            <artifact>*:*</artifact>
+                            <excludes>
+                                <exclude>META-INF/*.MF</exclude>
+                            </excludes>
+                        </filter>
+                        <filter>
+                            <artifact>com.github.PikaMug:LocaleLib</artifact>
+                            <excludes>
+                                <exclude>plugin.yml</exclude>
+                            </excludes>
+                        </filter>
+                    </filters>
                     <relocations>
                         <relocation>
                             <pattern>me.pikamug.localelib</pattern>

dist/src/main/assembly/all-jar.xml

@@ -1,5 +1,5 @@
-<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    	xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+    	xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
     <id>all-jar</id>
     <formats>
         <format>jar</format>
@@ -10,6 +10,7 @@
         <dependencySet>
             <unpack>true</unpack>
             <useTransitiveDependencies>false</useTransitiveDependencies>
+            <useProjectArtifact>false</useProjectArtifact>
         </dependencySet>
     </dependencySets>
 </assembly>