xcode upgrade to 7.3.1 from 7.2.1
<p>Right now i'm using xcode 7.2.1 and planning to upgrade to 7.3.1, my question is, xcode 7.3.1 has swift 2.2 and 7.2.1 has swift 2.1. there are some new functionalities added and old ones are removed by apple. so, is it ok to upgrade to 7.3.1? will it affect my current project? (which is in swift 2.1)</p>