Clean up game-updates reducer, cf. #955
Clean up game-updates reducer, cf. #955

leafo/itchio-app,itchio/itch,itchio/itch,itchio/itch,itchio/itch,itchio/itch,itchio/itchio-app,itchio/itchio-app,leafo/itchio-app,leafo/itchio-app,itchio/itch,itchio/itchio-app