Fix bug with ByteStream.skip(0) not returning itself

Author: codedread

io/bytestream.js

@@ -317,7 +317,7 @@ export class ByteStream {
     if (n !== num || num < 0) {
       throw 'Error!  Called skip() with a non-positive integer';
     } else if (num === 0) {
-      return;
+      return this;
     }
 
     const totalBytesLeft = this.getNumBytesLeft();

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@codedread/bitjs",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Binary Tools for JavaScript",
   "homepage": "https://github.com/codedread/bitjs",
   "author": "Jeff Schiller",

tests/io-bytestream.spec.js

@@ -239,10 +239,11 @@ describe('bitjs.io.ByteStream', () => {
     });
 
     it('skip(0) has no effect', () => {
-      stream.skip(0);
+      const retVal = stream.skip(0);
       expect(stream.getNumBytesRead()).equals(0);
       expect(stream.getNumBytesLeft()).equals(4);
       expect(stream.readNumber(1)).equals(0);
+      expect(retVal === stream).equals(true);
     });
 
     it('skip() with negative throws an error', () => {