Ostap:(back)propagation of developments from the standalone version of ostap

Ostap:

• (back)propagation of developments from the standalone version of ostap
• many changes, especially in fitting machinery and models
• use properties where possible
  • it allows to get better documentation
  • it allows to hide some technicalities
  • it provides some protection for some important data fields
• some scripts can be broken, but fixes are trivial

Analysis/Ostap/doc/release.notes

@@ -4,9 +4,14 @@
 ! Purpose     : Interactive PyRoot-based environment     
 ! -----------------------------------------------------------------------------
 
+! 2018-01-20 - Vanya Belyaev
+ - (back)propagation of development from the standalone version of ostap  
+ - many changes, especially in fitting machinery and models 
+ - use properties where possible 
+ - some scripts can be broken, but fixes are   trivial
 
 ! 2017-11-12 - Vanya Belyaev
- - Move 2D fitting machinery into  separate moduel Fit2D
+ - Move 2D fitting machinery into  separate module Fit2D
  - reshufflle 2D-utilities between modules 
  - create new 3D-fitting machinery (in the module Fig3D) 
  - create H3D_dset & H3D_pdf