Fixed parsing of REMARK 350 records in PDB files (Biological Assemblies)
to accommodate various format inconsistencies. Also refactored
PDBBioAssemblyParser to create bioassemblies where the models and chains
are ordered in the same way as in the PDB bioassembly files (xxxx.pdb1,
etc.).
Merge branch 'master' of https://github.com/biojava/biojava