PR to introduce the structure of the b tag reshaping SF code.
NOTE that the b tag reshaping SF is not yet fully functional (systematics to fix, hist filler to handle normalisation, test to run), but the code structure is defined.
The config default to the old WP SF implementation.
PR to introduce the structure of the b tag reshaping SF code. NOTE that the b tag reshaping SF is not yet fully functional (systematics to fix, hist filler to handle normalisation, test to run), but the code structure is defined. The config default to the old WP SF implementation.