Disable proguard for debug builds, enable debugging for all builds
Disable proguard for debug builds, enable debugging for all builds

There now are some annoying warnings in the debug build following this
change, but being able to debug is more important. Rebuilding the 3rd
party lib with a newer compiler will fix them and so might be worth
doing at some point.

dschuermann/ical-import-export,dschuermann/ical-import-export,SufficientlySecure/ics-import-export,SufficientlySecure/ics-import-export,dschuermann/ical-import-export,SufficientlySecure/ics-import-export