Add version to stack traces, fix EnumWrappers in pre-1.8

ProtocolLib/pom.xml

@@ -84,7 +84,12 @@
         <version>2.5</version>
         <configuration>
           <archive>
-            <addMavenDescriptor>false</addMavenDescriptor>
+            <manifestEntries>
+              <Main-Class>com.comphenix.protocol.Application</Main-Class>
+              <Implementation-Title>ProtocolLib</Implementation-Title>
+              <Implementation-Version>${project.version}${project.build.number}</Implementation-Version>
+              <Implementation-Vendor>dmulloy2</Implementation-Vendor>
+            </manifestEntries>
           </archive>
           <finalName>ProtocolLib</finalName>
         </configuration>

ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/EnumWrappers.java

@@ -330,9 +330,11 @@ public abstract class EnumWrappers {
 	}
 
 	private static void associate(Class<?> nativeClass, Class<?> wrapperClass, EquivalentConverter<?> converter) {
+		if (nativeClass != null) {
 			FROM_NATIVE.put(nativeClass, converter);
 			FROM_WRAPPER.put(wrapperClass, converter);
 		}
+	}
 
 	/**
 	 * Retrieve the enum field with the given declaration index (in relation to the other enums).
@@ -341,7 +343,11 @@ public abstract class EnumWrappers {
 	 * @return The type of the enum field.
 	 */
 	private static Class<?> getEnum(Class<?> clazz, int index) {
+		try {
 			return FuzzyReflection.fromClass(clazz, true).getFieldListByType(Enum.class).get(index).getType();
+		} catch (Throwable ex) {
+			return null; // Unsupported in this version
+		}
 	}
 
 	public static Map<Class<?>, EquivalentConverter<?>> getFromNativeMap() {

modules/v1_7_R4/pom.xml

@@ -84,7 +84,12 @@
         <version>2.5</version>
         <configuration>
           <archive>
-            <addMavenDescriptor>false</addMavenDescriptor>
+            <manifestEntries>
+              <Main-Class>com.comphenix.protocol.Application</Main-Class>
+              <Implementation-Title>ProtocolLib</Implementation-Title>
+              <Implementation-Version>${project.version}${project.build.number}</Implementation-Version>
+              <Implementation-Vendor>dmulloy2</Implementation-Vendor>
+            </manifestEntries>
           </archive>
           <finalName>ProtocolLib</finalName>
           <outputDirectory>../../target/</outputDirectory>