Sequence play -> once.

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java

@@ -2488,7 +2488,7 @@ public class Animation {
 			if (mode != SequenceMode.stop) {
 				index += (time - before) / delay;
 				switch (mode) {
-				case play:
+				case once:
 					index = Math.min(count - 1, index);
 					break;
 				case loop:

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/attachments/Sequence.java

@@ -115,7 +115,7 @@ public class Sequence {
 	}
 
 	static public enum SequenceMode {
-		stop, play, loop, pingpong, playReverse, loopReverse, pingpongReverse;
+		stop, once, loop, pingpong, playReverse, loopReverse, pingpongReverse;
 
 		static public final SequenceMode[] values = values();
 	}