release(2.0.4)

changelog.md

-# Next
+# 2.0.4
 - [BUG] Fixed support for 2 x belongsToMany without foreignKey defined and association getter/adder [#3185](https://github.com/sequelize/sequelize/issues/3185)
 - [BUG] No longer throws on `Model.hasHook()` if no hooks are defiend [#3181](https://github.com/sequelize/sequelize/issues/3181)
 - [BUG] Fixed issue with `{$and: []}`

package.json

 {
   "name": "sequelize",
   "description": "Multi dialect ORM for Node.JS",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "author": "Sascha Depold <sascha@depold.com>",
   "contributors": [
     {