Add encoding type 4 to bundle

lib/www/server/lib/binary/bundle.js

@@ -273,6 +273,31 @@ function bundle (json, opts = {}) {
 		});
 
 		return encode.sequential(json, el => el.sequence, el => el.point, deltas, values, type)
+	} else if (type == 4) {
+		/* Bare final positions
+		 *
+		 * Δelem    0: Sequence no. (Uint16Array, Uint8Array)
+		 * elem   0‒1: Float32Array, Float32Array – Final positions (x, y)
+		 *
+		 */
+
+		deltas.push({
+			key: el => el[2],
+			baseType: Uint16Array,
+			incrType: Int8Array
+		});
+
+		values.push({
+			key: el => el[3],
+			type: Float32Array
+		});
+
+		values.push({
+			key: el => el[4],
+			type: Float32Array
+		});
+
+		return encode.sequential(json, el => el[0], el => el[1], deltas, values, type)
 	} else if (type == 0xa) {
 		/* 4D comparison data:
 		 *