adjust/unity_sdk v4.20.1

Version 4.20.1

on GitHub

Fixed

• Fixed usage of deprecated TargetGuidByName API as of Unity 2019.3.0 (thanks to @epsmarkh).
• Fixed unnecessary saving of AndroidManifest.xml file whose content was not changed during post build process (thanks to @nanasi880).

Native versions:

• iOS@v4.20.0
• Android@v4.20.0
• Windows@v4.17.0

Pull Request #168