Version 1.1: Map customization!

"Make no small plans; they have no magic to stir men's blood" - Daniel Burnham

In version 1.1, when you start a new game, in addition to the well-known Chicago, Pittsburgh, Detroit, and Cincinnati maps, you will have an option to select a "custom map". This is where you can tweak procedural generation to create a completely new map, with a new topography and layout.

In the custom map UI you can tweak a number of settings:
- River density and shape
- Types of hills and coastlines
- Road network characteristics
- Number of rival gangs, corner hooligans, and police precincts
- Density of named industrial and commercial centers
- Which source city should be used for economy settings (e.g. to specify what kinds of production chains are available)

Additional fixes

Bug fix: retuned trait generation, some like "intelligent" or "religious" were overconstrained
Bug fix: scrollable UI elements should no longer be reacting to arrow keys