Update event hierarchy (#1952)

* Add abstraction for session state events
* Remove Voice Move/Join/Leave events

src/main/java/net/dv8tion/jda/api/JDABuilder.java

@@ -20,6 +20,7 @@
 import net.dv8tion.jda.api.entities.Activity;
 import net.dv8tion.jda.api.events.Event;
 import net.dv8tion.jda.api.exceptions.InvalidTokenException;
+import net.dv8tion.jda.api.events.session.ReadyEvent;
 import net.dv8tion.jda.api.hooks.IEventManager;
 import net.dv8tion.jda.api.hooks.VoiceDispatchInterceptor;
 import net.dv8tion.jda.api.requests.GatewayIntent;
@@ -1738,7 +1739,7 @@ public JDABuilder setMaxBufferSize(int bufferSize)
      * <p>If you wish to be sure that the {@link net.dv8tion.jda.api.JDA} information is correct, please use
      * {@link net.dv8tion.jda.api.JDA#awaitReady() JDA.awaitReady()} or register an
      * {@link net.dv8tion.jda.api.hooks.EventListener EventListener} to listen for the
-     * {@link net.dv8tion.jda.api.events.ReadyEvent ReadyEvent}.
+     * {@link ReadyEvent ReadyEvent}.
      *
      * @throws InvalidTokenException
      *         If the provided token is invalid.

src/main/java/net/dv8tion/jda/api/events/guild/GuildReadyEvent.java

@@ -18,24 +18,26 @@
 
 import net.dv8tion.jda.api.JDA;
 import net.dv8tion.jda.api.entities.Guild;
-import net.dv8tion.jda.api.events.ReadyEvent;
+import net.dv8tion.jda.api.events.session.ReadyEvent;
+import net.dv8tion.jda.api.events.session.SessionRecreateEvent;
 
 import javax.annotation.Nonnull;
 
 /**
- * Indicates that a {@link net.dv8tion.jda.api.entities.Guild Guild} finished setting up
+ * Indicates that a {@link Guild} finished setting up
  * <br>This event is fired if a guild finished setting up during login phase.
  * After this event is fired, JDA will start dispatching events related to this guild.
  * This indicates a guild was created and added to the cache. It will be fired for both the initial
- * setup and full reconnects (indicated by {@link net.dv8tion.jda.api.events.ReconnectedEvent ReconnectedEvent}).
+ * setup and full reconnects (indicated by {@link SessionRecreateEvent}).
  *
  * <p>Can be used to initialize any services that depend on this guild.
  *
  * <p>When a guild fails to ready up due to Discord outages you will not receive this event.
  * Guilds that fail to ready up will either timeout or get marked as unavailable.
  * <br>You can use {@link ReadyEvent#getGuildUnavailableCount()} and {@link JDA#getUnavailableGuilds()} to check for unavailable guilds.
  * {@link GuildTimeoutEvent} will be fired for guilds that don't ready up and also don't get marked as unavailable by Discord.
- * Guilds that timeout will be marked as unavailable by the timeout event, they will <b>not</b> fire a {@link GuildUnavailableEvent} as that event is only indicating that a guild becomes unavailable <b>after</b> ready happened.
+ * Guilds that timeout will be marked as unavailable by the timeout event,
+ * they will <b>not</b> fire a {@link GuildUnavailableEvent} as that event is only indicating that a guild becomes unavailable <b>after</b> ready happened.
  */
 public class GuildReadyEvent extends GenericGuildEvent
 {

src/main/java/net/dv8tion/jda/api/events/guild/GuildTimeoutEvent.java

@@ -18,13 +18,13 @@
 
 import net.dv8tion.jda.api.JDA;
 import net.dv8tion.jda.api.events.Event;
-import net.dv8tion.jda.api.events.ReadyEvent;
+import net.dv8tion.jda.api.events.session.ReadyEvent;
 
 import javax.annotation.Nonnull;
 
 /**
  * Indicates that a guild failed to ready up and timed out.
- * <br>Usually this event will be fired right before a {@link net.dv8tion.jda.api.events.ReadyEvent ReadyEvent}.
+ * <br>Usually this event will be fired right before a {@link ReadyEvent ReadyEvent}.
  *
  * <p>This will mark the guild as <b>unavailable</b> and it will not be usable when JDA becomes ready.
  * You can check all unavailable guilds with {@link ReadyEvent#getGuildUnavailableCount()} and {@link JDA#getUnavailableGuilds()}.