Smart City Plan 1.08 Update

Smart City Plan update 1.08 is now available.

This update adds oil power plants, earlier subways mod, real-time global water stats, and various improvements everywhere. Details here:

• [h2]Oil Power Plant[/h2]
  
  There is now an oil power plant available in the game. It can be used as smaller alternative to the coal power plant: it unlocks at the same time, but costs much less,
  is smaller, a bit cleaner, but also provides less energy at a in relation larger upkeep cost.
  
  
• [h2]Realtime global water stats[/h2]
  
  Corresponding to the Realtime Global Power Stats introduced in update 1.06, there is also now a stat showing you the amount of water water currently used and provided by your city.
  To see it, simply click on the "display mode" button and then on "water supply".
  
  
• [h2]Earlier Subways[/h2]
  
  there is now a mod available named 'Earlier subway', when installed, making it possible to build subways much earlier. This was requested by many people, and so you can
  now build subways when you have a population of 9200 already, instead of the default 23000.
  
  
• Various small improvements in the traffic routing algorithm, causing congestions to be solved sometimes earlier (or in a different way) and the simulation to be run a bit faster in very large cities
  
  
• The mail notification sound has been replaced with a nicer version, reducing the stress experienced reported by some players quite a bit. Hope you like the new one better.
  
  
• The mail filter button in the mail dialog now has a tooltip so that it can be found easier by new players
  
  
• The mod button is now visible in the main menu next to the "Settings..." button so that it gets a bit more visibility.
  
  
• Values in the realtime global power stats display are now aligned to the right so they can be compared more easily.
  

Please note that updates are currently a bit slowed down due to the COVID-19 lockdown, so this update doesn't include everything we planned for the first one.
Hope you like this update anyway!

Thanks for all the feedback so far, further feedback is welcome as always!