Inconsistent dependencies for validated-changeset

I believe you might want a caret (^) instead of a tilde (~) here https://github.com/poteto/ember-changeset/blob/master/package.json#L45

If you have 4.1 of ember-changeset and 4.0 (since 4.1 isnt out yet) of ember-changeset-validations you get the following error

```
ember-changeset-validations needs validated-changeset satisfying ~1.1.3, but we have version 1.3.2
```

1.3.2 is greater than 1.1.3 but since the ~is used, it wont accept 1.2 or higher. I am assuming you are getting a 4.1 out of ember-changeset-validations which will fix the problem. but not sure if you wanted to lock step them so closely.

Of course I just happen to try updating just hours after you released 4.1 :)

Start at package.json line 45, where the dependency range is linked, and compare it with the reported 1.3.2 and 1.1.3 versions. Reproduce the installation with ember-changeset 4.1 and ember-changeset-validations 4.0; done means the compatible validated-changeset version installs without the reported error.

Escrita pelo modelo de indexação a partir do texto da issue.