Modernize MuonAssociators
- amalgamate component headers into their source files
- prefer ToolHandle
- prefer Gaudi::Property
- prefer inherited constructor
- drop redundant destructors
- prefer DataObject{Read,Write}Handle
- simplify logic
- avoid redundant TES lookups inside loop
- add const
requires LHCb!2300 (merged)
Edited by Gerhard Raven