- Disable optimizations on eu.kanade.tachiyomi.source.** classes to avoid access modifications causing mismatches between the app and extensions
- Remove Gson and Kotson Proguard rules, since we don't have those dependencies anymore
(cherry picked from commit bdb55ef8817557e1d4bb4eda1120949ef42a8b54)
# Conflicts:
# app/proguard-rules.pro