Refactored HttpParameter to use String.format instead of string concatenation in toString method
Refactored Version to use String.format instead of string concatenation in toString method
Refactored SubsonicConnection to use String.format instead of string concatenation in toString method
Minor refactorings at SubsonicConnection class
Minor refactorings at AlbumRating class
fixes #203 Added GNU license text to all test classes
Merge branch 'develop'