Changes in version 1.55:

• renamed test files in folder xtst/
• Rewrote to Left(Right)CosetRepresentatives(FromObject)
• Corrections to methods for RightCoset and LeftCoset
• Removed HomsetCosetsGroupoidCoset + old IsHomsetCosetsType
• Operation RayElementsOfGroupoid now Attribute RaysOfGroupoid and Attribute RaysOfGroupoid now Operation RayArrowsOfGroupoid
• now using AutoDoc to build the manual
• changed HomsetCosets from IsPositionalObjectRep
• corrected SubgroupoidByPieces when rays are involved
• add IsomorphismNewObjects method for hom discrete methods for \in for AutomorphismGroupOfGroupoid
• removed examples/*.g; added expt/; .xtst files not in xtst/
• split off autogroup functions from gpdhom.g{d,i} to gpdaut.g{d,i}
• added property IsAutomorphismGroupOfGroupoidAsGroupoid
• added method for \in for automorphisms of groupoids