Add support for spigot 1.8.3

src/com/cnaude/chairs/vehiclearrow/v1_8_R2/CraftChairsArrow.java

@@ -0,0 +1,30 @@
+package com.cnaude.chairs.vehiclearrow.v1_8_R2;
+
+import net.minecraft.server.v1_8_R2.EntityArrow;
+
+import org.bukkit.craftbukkit.v1_8_R2.CraftServer;
+import org.bukkit.craftbukkit.v1_8_R2.entity.CraftArrow;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Vehicle;
+
+import com.cnaude.chairs.api.ChairsAPI;
+
+public class CraftChairsArrow extends CraftArrow implements Vehicle {
+
+	public CraftChairsArrow(CraftServer server, EntityArrow entity) {
+		super(server, entity);
+	}
+
+	@Override
+	public void remove() {
+		Entity passenger = getPassenger();
+		if (passenger != null && passenger instanceof Player) {
+			if (ChairsAPI.isSitting((Player) passenger)) {
+				return;
+			}
+		}
+		super.remove();
+	}
+
+}

src/com/cnaude/chairs/vehiclearrow/v1_8_R2/NMSArrowFactory.java

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+package com.cnaude.chairs.vehiclearrow.v1_8_R2;
+
+import net.minecraft.server.v1_8_R2.EntityArrow;
+
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_8_R2.CraftWorld;
+import org.bukkit.entity.Arrow;
+
+import com.cnaude.chairs.vehiclearrow.NMSArrowFactoryInterface;
+
+public class NMSArrowFactory implements NMSArrowFactoryInterface {
+
+	@Override
+	public Arrow spawnArrow(Location location) {
+		CraftWorld world = (CraftWorld) location.getWorld();
+		EntityArrow arrow = new NMSChairsArrow(world, location);
+		return (Arrow) arrow.getBukkitEntity();
+	}
+
+}

src/com/cnaude/chairs/vehiclearrow/v1_8_R2/NMSChairsArrow.java

@@ -0,0 +1,23 @@
+package com.cnaude.chairs.vehiclearrow.v1_8_R2;
+
+import net.minecraft.server.v1_8_R2.EntityArrow;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_8_R2.CraftServer;
+import org.bukkit.craftbukkit.v1_8_R2.CraftWorld;
+
+public class NMSChairsArrow extends EntityArrow {
+
+	public NMSChairsArrow(CraftWorld cworld, Location location) {
+		super(cworld.getHandle());
+		setPositionRotation(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
+		world.addEntity(this);
+		bukkitEntity = new CraftChairsArrow((CraftServer) Bukkit.getServer(), this);
+	}
+
+	@Override
+	public void t_() {
+	}
+
+}