Merge pull request #17 from minism/sequence

Generalize sequence to accept arrays of any value.

Author: tambien

index.d.ts

@@ -3448,9 +3448,7 @@ declare namespace Tone {
     at(time: Encoding.TransportTime, value?: any): Event;
   }
 
-  type NoteArray = ReadonlyArray<Encoding.Note>;
-  type NoteSequence = ReadonlyArray<Encoding.Note | NoteArray>;
-  type SequenceArray = ReadonlyArray<Encoding.Note | NoteArray | NoteSequence>
+  type SequenceCallback<T> = (time: Encoding.Time, value: T) => void;
 
   /**
    * A sequence is an alternate notation of a part. Instead
@@ -3459,8 +3457,8 @@ declare namespace Tone {
    * subdivision. Sub-arrays will subdivide that beat by the
    * number of items are in the array
    */
-  class Sequence extends Part {
-    constructor(callback: Callback, events: SequenceArray, subdivision: Encoding.Time)
+  class Sequence<T> extends Part {
+    constructor(callback: SequenceCallback<T>, events: ReadonlyArray<T>, subdivision: Encoding.Time)
 
     /**
      * The subdivision of the sequence. This can only be set