Latest craftbukkit builds deprecate playerchat:

07:51:33 [WARNING] [Residence] "Residence v2.6.3" has registered a listener for org.bukkit.event.player.PlayerChatEvent on method "public void com.bekvon.bukkit.residence.listeners.ResidencePlayerListener.onPlayerChat(org.bukkit.event.player.PlayerChatEvent)", but the event is Deprecated. Server performance will be affected; please notify the authors [bekvon, inorixu, lemon42, nate302, smbarbour, Shayana, t00thpick1].
org.bukkit.plugin.AuthorNagException
at org.bukkit.plugin.java.JavaPluginLoader.createRegisteredListeners(JavaPluginLoader.java:302)
at org.bukkit.plugin.SimplePluginManager.registerEvents(SimplePluginManager.java:507)
at com.bekvon.bukkit.residence.Residence.onEnable(Residence.java:291)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at com.bekvon.bukkit.residence.Residence.setEnabled(Residence.java:1821)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:357)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:263)
at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:245)
at net.minecraft.server.MinecraftServer.i(MinecraftServer.java:296)
at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:275)
at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:225)
at net.minecraft.server.DedicatedServer.init(DedicatedServer.java:140)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:380)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)

Taken care of in dev build