GetOrganelle v1.7.6.1

1. improve the target component recognition on non-circular cases (#138 & #141 )
2. assembly_graph.py & statistical_func.py: specify scipy error (#132 )
3. compatible with the newly released GetOrganelleDB v0.0.1.minima (#64 )
4. get_organelle_config.py: fix a bug when there was no available directory made before running --config-dir would be invalid; fix a bug for malfunctioning --verbose