Updated arbdmodel to commit 1578c98 from arbdmodel package

mrdna/arbdmodel/__init__.py

mrdna/arbdmodel/abstract_polymer.py

mrdna/arbdmodel/coords.py

mrdna/arbdmodel/fjc_polymer_model.py

mrdna/arbdmodel/hps_polymer_model.py

mrdna/arbdmodel/interactions.py

mrdna/arbdmodel/kh_polymer_model.py

mrdna/arbdmodel/kh_polymer_model_pair_epsilon.py

mrdna/arbdmodel/onck_polymer_model.py

mrdna/arbdmodel/resources/two_bead_model/BBP.dat

mrdna/arbdmodel/resources/two_bead_model/BPB.dat

mrdna/arbdmodel/resources/two_bead_model/BPP.dat

mrdna/arbdmodel/resources/two_bead_model/NBBB.dat

mrdna/arbdmodel/resources/two_bead_model/NBPB.dat

mrdna/arbdmodel/resources/two_bead_model/NBPP.dat

mrdna/arbdmodel/resources/two_bead_model/b1p1p2b2.dat

mrdna/arbdmodel/resources/two_bead_model/b1p2b2.dat

mrdna/arbdmodel/resources/two_bead_model/b1p2p3.dat

mrdna/arbdmodel/resources/two_bead_model/b1p2p3b3.dat

...esources/two_bead_model/diffusion/b-bead.hydropro-pri.bea