Changing Weather's package
Adding javadoc on World, cleaning code and adding import to random package
Adding javadoc to Weather enum
Fixes due to the change of the package of the class Weather
Fixes in the javadoc text
Cleaning code
Adding javadoc for package arena
Fix in link at @see
Adding javadoc to Main and putting it in its own package (guess the name?)
Updating Main-Class in manifest and correcting minor mistake with paths
Merging
Forgotter header for Robot