Ganttproject has been improve by several contributions over the world.
Thousand thanks to (in alphabetic order):
ANDRESEN Roger,
AUDRU Cédric,
BARASHEV Dmitry,
BARMEIER Matthias,
BROKER Rick,
CROUNSE Brian,
FERRAZ Nelson,
HERRMANN G.,
HURSEY John,
KITSIK Ahti,
LIN Kirin,
LIPINSKI Pawel,
LU Cui,
NATHANAEL Uwe,
OGNESS John,
PAULIN Matt,
PLUSCHKE Andreas,
RACINOWSKI Przemyslaw,
REY Juan juanrey,
SAHIN Cengiz,
SCHULZ Maik,
SENIGAGLIESI,
ZAVOLZHSKY Alexandr