The NetCipher library creates instances of HttpURLConnection that are
configured to have solid TLS protocol and cipher settings, especially on
older versions of Android.
fixes#370https://gitlab.com/fdroid/fdroidclient/issues/370
This stops the stripping of classes required for the swap stuff. proguard
strips all sorts of stuff that is needed because of things like dynamic
loading, reflection, etc.
fixes#391https://gitlab.com/fdroid/fdroidclient/issues/391