Merge branch 'master' into dev/1.1.0

# Conflicts:
#	build.gradle

README.md

@@ -42,7 +42,7 @@ Velocity is currently in beta. Production networks are successfully running
 Velocity with many hundreds of concurrent players online, but your mileage
 may vary.
 
-Velocity supports Minecraft 1.8-1.14.3-pre4. Velocity is best supported with Paper
+Velocity supports Minecraft 1.8-1.14.3. Velocity is best supported with Paper
 and SpongeVanilla. Minecraft Forge is fully supported but mod compatibility
 may vary. Generally, Velocity will support many mods better than BungeeCord
 or Waterfall do but compatibility can not always be ensured.

api/src/main/java/com/velocitypowered/api/network/ProtocolVersion.java

@@ -30,7 +30,7 @@ public enum ProtocolVersion {
   MINECRAFT_1_14(477, "1.14"),
   MINECRAFT_1_14_1(480, "1.14.1"),
   MINECRAFT_1_14_2(485, "1.14.2"),
-  MINECRAFT_1_14_3(489, "1.14.3-pre4");
+  MINECRAFT_1_14_3(490, "1.14.3");
 
   private final int protocol;
   private final String name;

proxy/src/main/java/com/velocitypowered/proxy/util/VelocityMessages.java

@@ -7,7 +7,13 @@ import net.kyori.text.format.TextColor;
 public class VelocityMessages {
 
   public static final Component ONLINE_MODE_ONLY = TextComponent
-      .of("This server only accepts connections from online-mode clients.", TextColor.RED);
+      .builder("This server only accepts connections from online-mode clients.")
+      .color(TextColor.RED)
+      .append(
+          TextComponent.of("\n\nDid you change your username? Sign out of Minecraft, sign back in, "
+              + "and try again.", TextColor.GRAY)
+      )
+      .build();
   public static final Component NO_PROXY_BEHIND_PROXY = TextComponent
       .of("Running Velocity behind Velocity isn't supported.", TextColor.RED);
   public static final Component NO_AVAILABLE_SERVERS = TextComponent