Merge branch 'develop' into hhblits3

doc/make.py

modules/conop/doc/connectivity.rst

modules/doc/install.rst

modules/io/doc/mmcif.rst

modules/io/pymod/__init__.py

modules/io/pymod/export_mmcif_io.cc

modules/io/src/mol/chemdict_parser.cc

modules/io/src/mol/mmcif_info.cc

modules/io/src/mol/mmcif_info.hh

modules/io/src/mol/mmcif_reader.cc

modules/io/src/mol/mmcif_reader.hh

modules/io/tests/test_io_mmcif.py

modules/io/tests/test_mmcif_info.cc

modules/io/tests/test_mmcif_reader.cc

modules/mol/alg/pymod/export_molck.cc

modules/mol/base/doc/entity.rst

modules/mol/base/pymod/export_chain.cc

modules/mol/base/src/chain_type.cc

modules/mol/base/src/chain_type.hh

modules/mol/base/src/impl/chain_impl.hh