This patch renames gather technologies to be more consistent and precise, e.g.:
gather_metal_city.json gather_metal_town.json gather_metal_village.json gather_stone_city.json gather_stone_town.json gather_stone_village.json
The advantage is that from the file name alone it's immediately clear what they do and what their order is. Moreover, searching for e.g. city will show up technologies enabled in city phase and metal will show up all metal technologies.
This is currently not the case, e.g.:
gather_mining_serfs.json gather_mining_servants.json gather_mining_shaftmining.json gather_mining_silvermining.json gather_mining_slaves.json gather_mining_wedgemallet.json
You have to open them to find out which one you really need, which is quite inefficient.
gather_animals_stockbreeding.json gather_capacity_fishing.json gather_fishing_net.json
These technologies affect domestic animals and fishing boats, respectively, not citizens/gatherers/workers, therefore they are renamed to reflect that.