Merge pull request #1 from nikibobi/master

Added Color operators
Bug Fixes, Updates, And Refactoring

Fixed known issues in CircleShape class, updated library to compile
correctly on DMD 2.062, updated library to match current build of
SFML/CSFML, and cleaned up and refactored some parts of the files. I
also split the import libs from the .dll files and placed them in their
own folder.