CronSequenceGenerator is now package-protected (only used by CronTrigger)

org.springframework.context/src/main/java/org/springframework/scheduling/support/CronSequenceGenerator.java

@@ -47,7 +47,7 @@ import org.springframework.util.StringUtils;
  * @since 3.0
  * @see CronTrigger
  */
-public class CronSequenceGenerator {
+class CronSequenceGenerator {
 
 	private final BitSet seconds = new BitSet(60);