eschew Object.assign in downloads reducer
eschew Object.assign in downloads reducer

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