set default version to 1.17

Author: Scarsz

src/version.js

@@ -1,6 +1,6 @@
 'use strict'
 
 module.exports = {
-  defaultVersion: '1.16.5',
+  defaultVersion: '1.17',
   supportedVersions: ['1.7', '1.8', '1.9', '1.10', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.5', '1.17']
 }