New pre-release v3.0.0-pre1 for CMSSW_14_1_X

This release brings compatibility with the CMSSW_14_1_X series and several fixes and improvements for datacard parsing.

Known issues

• Datacards using RooDataHist objects might not be parsable with root v6.30. Please report any issues.

What's Changed

• Add the variables for param NP to the datacard parsing and writing methods by @anigamova in #308
• Root 6.26 compatibility by @nsmith- in #309
• Adding fix for case where param and rateParam have same name by @jonathon-langford in #310
• Update WriteDatacard by @anigamova in #312
• Add new method for extArg import to reduce memory consumption by @anigamova in #313
• More fixes for extArg parsing by @anigamova in #314
• Add some help description to FastScan by @ajgilbert in #315
• rooconstvar backcompatibility problem by @amarini in #316
• Correct counting of toys for F-C in LimitGrid.py by @ajgilbert in #319
• plot1DScan.py to be compiled with python3 by @jonathon-langford in #323
• Move scripts to combine by @pkausw in #318
• ROOT v6.30: Update RooWorkspace::Clone by @anigamova in #325
• Replace soon to be deprecated iterators by @anigamova in #324

Full Changelog: v2.1.0...v3.0.0-pre1