Release alpha v.0.4.1

Few changes, but I hope you enjoy and test the giant map.

Features

• Huge map

• New building: Heavy iron mine

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Bugs

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• The << back button now works properly

• Fixed the issue when pausing and unpausing with space bar, it did not resume on the speed that you had before

• Parking lots no longer cause a loop of upgrading and downgrading

• Hotkeys to zoom in/out