GetOrganelle v1.6.3a

1.6.3 updates:

1. --max-multiplicity added
2. fix a bug when kmer-len repeats shared by two contigs; fix a bug that cause RuntimeError
3. Assembly.parse_gfa(): compatibility increased
4. Assembly.estimate_copy_and_depth_precisely(): fix a bug on a rare case that multiplicities res are 4,8,4
5. Assembly: too many results due to palindromic repeats, problem solved

see GetOrganelleLib/versions.py for more details