Warning: this mod makes the game considerably easier and will be considered cheating by most gamers.
In version 3 the growth rate has been doubled for all resources that support growth: trees (wild and in orchards), plants (crops, gatherer resources and herbs) and animals (wild deer and animals in pastures) now grow or produce offspring twice as fast. You can however, destroy your existing buildings and place new ones which will have the increase in volume. This will only work for new buildings of these types, so storage barns and stockpiles built before activation of this mod will not be changed.
In version 2 the volume of the storage barn has been increased to 20000 units (default 6000) and the stockpile space has been doubled to 500 units per tile (default 250). It also compensates for the increase in resource stacks by reducing the weight of some heavy items. It takes a bit of time before it works (because it only works for new resources), but it's compatible with existing save games. Production buildings will also generate twice a much items for the same amount of resources. All newly generated resources, like crops from fields and logs from trees will be doubled (more or less). This mod increases the amount of resources gained from all sources.
