Channel names should be lowercase according to the spec

Related #217, #218

core/src/main/java/com/github/games647/fastlogin/core/message/ChangePremiumMessage.java

@@ -5,7 +5,7 @@ import com.google.common.io.ByteArrayDataOutput;
 
 public class ChangePremiumMessage implements ChannelMessage {
 
-    public static final String CHANGE_CHANNEL = "ChStatus";
+    public static final String CHANGE_CHANNEL = "ch-status";
 
     private String playerName;
     private boolean willEnable;

core/src/main/java/com/github/games647/fastlogin/core/message/LoginActionMessage.java

@@ -7,7 +7,7 @@ import java.util.UUID;
 
 public class LoginActionMessage implements ChannelMessage {
 
-    public static final String FORCE_CHANNEL = "ForceAct";
+    public static final String FORCE_CHANNEL = "force-act";
 
     private Type type;
 

core/src/main/java/com/github/games647/fastlogin/core/message/NamespaceKey.java

@@ -0,0 +1,24 @@
+package com.github.games647.fastlogin.core.message;
+
+public class NamespaceKey {
+
+    private final String namespace;
+    private final String key;
+
+    private final String combined;
+
+    public NamespaceKey(String namespace, String key) {
+        this.namespace = namespace.toLowerCase();
+        this.key = key.toLowerCase();
+
+        this.combined = namespace + ':' + key;
+    }
+
+    public String getCombinedName()  {
+        return combined;
+    }
+
+    public static String getCombined(String namespace, String key) {
+        return new NamespaceKey(namespace, key).combined;
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/message/SuccessMessage.java

@@ -5,7 +5,7 @@ import com.google.common.io.ByteArrayDataOutput;
 
 public class SuccessMessage implements ChannelMessage {
 
-    public static final String SUCCESS_CHANNEL = "Success";
+    public static final String SUCCESS_CHANNEL = "success";
 
     @Override
     public String getChannelName() {