I have an old iOS app that is built using our build server. I am looking into upgrading the app to latest version of Xamarin (and use Visual Studio for Mac), but this is a somewhat long term plan. On the short term I am also looking into reproducing the build server on a new mac. That means I would like to install a specific version of Xamarin Studio (mac) and Xamarin.iOS. Where can I find installation files for older versions?
Specifically I am looking for Xamarin Studio Community 6.1.5 and Xamarin.iOS 10.3.1.8