Room 2.3.0-beta01

Auto Closable Databases: Room now has the ability to close databases that are not accessed after a given amount of time. This is an experimental feature and can be enabled by calling RoomDatabase.Builder#setAutoCloseTimeout(). This feature is useful for applications with multiple databases. Fix an issue where Dao methods with multiple @Update or @Delete methods with different conflict strategies would generate code with only one of the strategies, effectively ignoring the defined one. ( /I0b90d, b/176138543)