Ferjerez Space Cities Easy-print Modification

Description

This is a customization of Ferjerez's amazing "Space Cities Generator" and "Sci-Fi City Builder". I have made a few changes to the OpenSCAD code, to improve print-ability and give smoother surfaces. Here's a summary of the changes: -Legs are made slightly thicker on very small towers, this makes them stronger and smoother by allowing a reasonable extrusion length on each layer. The larger towers are not changed. (See comparison photo, sliced with Simplify3D.) -Thickness is increased in the arches of small Cupolas, again for printing purposes. The smallest ones become solid. Large Cupolas are not effected. -For larger towers, pyramids and cylindrical features and domes: The number of faces now scales with size to make faceting less visible on large features. There is a cap on the number of faces, to keep file size practical if you go very big. (These changes do not affect file size much because they only effect the large features.) -I have reduced the average number of layers in the towers of inverted cones by half, (these are called "columna de discos" in the code). I did this just because I don't like them too tall. -I have doubled the chance of getting towers, because I like them. -I have changed the default base size to 180x120. The non-square shape forces a combination of small and large buildings. I think this makes it look more like part of an extended city rather than a single archaeology. This is easy to change back. There is a long list of seeds I like in the file…