Secondary area-related classes

Classes
class	fastjet::ClusterSequence1GhostPassiveArea
	Like ClusterSequence with computation of the passive jet area by adding a single ghost. More...
class	fastjet::ClusterSequenceActiveArea
	Like ClusterSequence with computation of the active jet area. More...
class	fastjet::ClusterSequenceActiveAreaExplicitGhosts
	Like ClusterSequence with computation of the active jet area with the addition of explicit ghosts. More...
class	fastjet::ClusterSequencePassiveArea
	Like ClusterSequence with computation of the passive jet area. More...
class	fastjet::ClusterSequenceVoronoiArea
	Like ClusterSequence with computation of the Voronoi jet area. More...