Review content of functor collections

Anfeng Lirequested to merge
anfeng-fc-review into master

see #168

  • fix missing names in __all__
  • improvement of MCHierarchy
  • improvement of MCReconstructible
  • remove redundant information in Kinematics, MCKinematics, DecayTreeFitterResults, MCReconstructible
Edited by Anfeng Li

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