Fix error in caclulation of railroad rent
Merge pull request #3 from luminousfennell/fix-railroad-rent

Fix error in caclulation of railroad rent
Swing: first steps to viewer
street card footer; new streets
cleanup & all properties
fixed color handling + tests
Lifted action to AProperty
mock dice
fields, actions, turns
lifted mortgage handling
chance cards
clean up card related classes
factored card actions
lecture
cleanup; mortgage testing