Add warning on startup for 1.8 users

bungee/src/main/java/us/myles/ViaVersion/BungeePlugin.java

@@ -85,6 +85,11 @@ public class BungeePlugin extends Plugin implements ViaPlatform<ProxiedPlayer>,
         return getProxy().getVersion();
     }
 
+    @Override
+    public boolean isProxy() {
+        return true;
+    }
+
     @Override
     public String getPluginVersion() {
         return getDescription().getVersion();

common/src/main/java/us/myles/ViaVersion/ViaManager.java

@@ -97,6 +97,9 @@ public class ViaManager {
                 platform.getLogger().warning("If you need support for older versions you may need to use one or more ViaVersion addons too.");
                 platform.getLogger().warning("In that case please read the ViaVersion resource page carefully or use https://jo0001.github.io/ViaSetup");
                 platform.getLogger().warning("and if you're still unsure, feel free to join our Discord-Server for further assistance.");
+            } else if (ProtocolRegistry.SERVER_PROTOCOL == ProtocolVersion.v1_8.getId() && !platform.isProxy()) {
+                platform.getLogger().warning("This version of Minecraft is over half a decade old and support for it will be fully dropped eventually. "
+                        + "Please upgrade to a newer version to avoid encountering bugs and stability issues that have long been fixed.");
             }
         }
         // Load Listeners / Tasks

common/src/main/java/us/myles/ViaVersion/api/platform/ViaPlatform.java

@@ -16,6 +16,7 @@ import java.util.logging.Logger;
  * @param <T> - The player type for the platform, used for API related methods
  */
 public interface ViaPlatform<T> {
+
     /**
      * Get the logger for this platform
      *
@@ -33,10 +34,19 @@ public interface ViaPlatform<T> {
     /**
      * Get the platform version
      *
-     * @return Platforn version
+     * @return Platform version
      */
     String getPlatformVersion();
 
+    /**
+     * Returns true if the server Via is running on is a proxy server.
+     *
+     * @return true if the platform is a proxy
+     */
+    default boolean isProxy() {
+        return false;
+    }
+
     /**
      * Get the plugin version
      *

velocity/src/main/java/us/myles/ViaVersion/VelocityPlugin.java

@@ -102,6 +102,11 @@ public class VelocityPlugin implements ViaPlatform<Player> {
         return (version != null) ? version : "Unknown";
     }
 
+    @Override
+    public boolean isProxy() {
+        return true;
+    }
+
     @Override
     public String getPluginVersion() {
         return VersionInfo.VERSION;