refactoring of some Dmeson,gamma builders, add 1 lines with gamma (B0s2Ds*Pi)
refactoring of some Dmeson,gamma builders add 1 lines with gamma (B0s2Ds*Pi) GEC are off by default, can be included via argument ('GEC' in pre_filters)
refactoring of some Dmeson,gamma builders add 1 lines with gamma (B0s2Ds*Pi) GEC are off by default, can be included via argument ('GEC' in pre_filters)