- Removed all combined districts.
-- Removed ED_SCO_num_valid_districts_resort scripted value also.
-- Removed combined district-relaated scripted trigggers also.
- Added "Subterranean Shelter zone" district specialisation. It is for Undersurface City Districts.
- Updated about Unsecure Mining.
-- Added "Unsecure Mining zone" district specialisation. It is for Minign Districts and variants.
-- Disabled Unstable Mining deposits.
-- Changed working conditions of Unsecure Miner job. Now unemployed pops won't take it and become civillians.
-- Disabled "Unsecure Mining Drone" job. Now Unstable Mines. on gestalt empires will produce normal Mining Drones.
- Now Environment Research District has even job slots between Metallurgist and Artisan (each 50 at base).
- Fixed Facility districts cost on habitats, from 500 to 150 Alloys.
- Changed evaluator job slots on Unity district specialisation, from 35 to 70.
- Modifierd housing bonus on ED housing districts. Hive planets has +600, Machine empires has +100 and gestation colony has +100 modifiers.
- Changed job slots on Orbital Alloy Mine and "Astral Scar" Observation District.

- Fixed "Subterranean Exploratory Mine zone" district subtitle has wrong trigger.
- Modified "Subterranean Exploratory Mine zone" district description.

- Updates on Planetary Alloys Mines and Orbital Alloy Mine.
-- Unlock cloned zone_minerals.
-- Added "Heavy Metal Miner" and "Heavy Metal Mining Drone" jobs.
-- Jobs are changed, from Scrap Miner to Heavy Metal Miner.
-- Now Miner jobs won't be swapped to Scrap Miner.
-- Disabled Mining Drone job overwriting.
- Disabled miner_is_scrap_miner_trigger scripted trigger overwriting.
- Now building slots on combined district specialisations (3) is managed by "@ED_zone_building_slots_add" scripted variable.
- Disabled "has_job" based scripted triggers like "has_job_turbine_technician".

- Added Wildlife zone for farming distrists.
- Added Subterranean Shelter zone for Undersurface City districts.
- Vault country modifiers will be updated when Archeology Districts or Astral Scar Observation Districts are built or destroyed.
- Disabled zone slots for SR advanced districts.
- Fixed Planetary Alloys Mines and Orbital Alloy Mines won't swap mining drones to scrap ones.
- Fixed bureaucrats upkeep modifier from Energy or Food Unity zone was minerals.

- Fixed ED housing and facility districts have "Urban Expansion" zone option only.
- Merged regular version and gestalt version of Unity combined district zones.
- Converted manufacture conbined districts to district zones.
- Added "Mines with Mixed Industry", "Farms with Mixed Industry" and "Farms with Civilian Industry" district zones.
- Changed job slots of Unity combined district zones.
- Fixed Environment Districts can creanup relentless_industrialists_var variable too much. 200 environmentalist Pops have subtracted 200 point!

- Updated to Stellaris 4.0.17.
- Fixed toxic_attendant_growth scripted value. Processes order was wrong.

Fixed basic resource modifier at Unity district specializations were district_planet_modifier, not planet_modifier. Yes 3 farming districts with Nature Garden district specialization had -99% modifier!

- Fixed wrong district subtitle is displayed on basic resource districts (both vanilla ones and ED ones). Now ED basic resource districts (like "Wind Park") don't have subtitle (so vanilla subtitles won't be displayed) and can't have district specialisations (so vanilla district subtitles won't be changed).
- Changed district specialisation slots of district_hab_alloys, from slot_minerals to slot_habitat_minerals.
- Disabled district specialisations slots of research advanced districts.
- Limited some district specialisations on housing, facility and combined districts, to prevent district subtitle issues.
- Changed Unity combined districts to Unity district specialisations.

- Fixed some district provide Scrap Miner job or gestalt variant (now they are swapped from miner jobs, not independent jobs).
- Fixed rural district (include vanilla ones) don't have district specialisation.

- Hotfixed for Stellaris 4.0. I am planning about changing some ED districts to district zones...
- Changed Archaeological Artifacts Vault feature, from building to country modifiers.