Implemented speed message
Merge pull request #77 from Rubykuby/speedmessage

Implemented speed message
Moved Messages to separate package
Merge pull request #78 from Rubykuby/messages-package

Moved Messages to separate package
Made transporters abstract, modified how paths are initialized & split boat class into 2 classes
Made vehicle classes abstract, modified the method and class structure a bit.
Frontend now shows what the current date is on the screen! ( Also feel free to use an other font! )
Merge pull request #80 from MorenoB/Added_Date_information_on_HUD

Frontend now shows what the current date is on the screen! ( Also feel f...
Merge pull request #79 from thomw201/abstracttransporter

Made transporters abstract, modified how paths are initialized & split b...