identical particle swaping and other basic change

Support identical particle swap momentum in cal_angle. Add indentical_particles in config.yml:data for example

identical_particles: [[a, b]]

It means (a and b) are identical particles. Then pa <-> pb angle will be calculated. Amplitude sum over identical particles is supported by basic option. (cached_amp is not supported).

Some basic changes in decay_config to remove some bad decay chain. A new option decay_chain_cut: ["ls_cut", "mass_cut"] to enable some filter cuts for decay chain.

cp_trans=True will make allow_cc=False now.