Unneccesarily epic intro.

What I did

Made new roads delete buildings that are in the way

• Only the actual building footprint gets taken into account, if a road just goes through lawn or parking area, the building will stay

Smoothened zone drawing - no strange artifacts anymore

• Neighboring cities now grow according to regional demands and try to fix their own deficits
• However, they do so very slowly, giving the player the opportunity to make use of temporary demand spikes for growth of their own city

Fixed basic multilane traffic behaviour

• Cars can now consistently find paths and merge over multiple lanes

What I will probably do next

• Implement more complex multilane traffic interactions