v0.3.18

• Upgrade to mothur==1.43
• Upgrade to python 3.8
• Implement environment setup through conda
• Move from multiprocessing to multithreading
• Update MED scripts to work with python 3.8
• Switch off basal lineage forced separation
• Improve tests
• Include distance outputs for standalone seq output
• Fixes to minor formatting issues
• Shift nomenclature from Symbiodinium --> Symbiodiniaceae
• Further auto-curation of user datasheets
• Add Study and User classes to models.py
• Removal of phylip binaries