4.0.0-pre2

A checkpoint before the switch to 76X datasets.

The framework has been renamed. Dependent packages should update include paths, name of the framework library, and name of the environmental variable containing the installation path.

Bugfixes:

• Fixed application of stored JEC. In the previous release JEC were ignored.
• Fixed bug in filtering on triggers in data.
• Fixed bug in selection on jet ID.

Improvements:

• Added TFileService, which simplifies storing ROOT objects in output files.
• Added plugin BTagEffHistograms, which fills histograms that can be used for computation of b-tagging efficiencies in simulation.
• Added plugin LumiMaskFilter, which performs event filtering based on a luminosity mask.
• Added readers for generator-level particles and jets.
• Implemented matching between reconstructed and generator-level jets.
• Added method Plugin::GetDependencyPlugin to simplify access to a plugin from dependencies of the current plugin. This method also provides a much better error message if the requested plugin does not
  exist.

Updates:

• Updated pile-up profiles and files with b-tagging efficiencies.