Do I need to uninstall Sourcetree before upgrading to a newer version?

[TestUser]

I am currently running Sourcetree version 2.4.8.0.  If I want to upgrade to the latest version (3.3.x), do I need to uninstall 2.4.8.0 first or will the installation of the newer version handle that?

I am not looking to have two different versions of Sourcetree on my machine, just the latest one.

Also, do I need to do anything to save my settings?  After installing the new version, will it automatically pick up my local repos, pending changes, etc.?  None of my checked out files will get deleted right?

Thanks.