peterjc/thapbi-pict: THAPBI PICT v0.9.6

Released on PyPI on 2021-05-21:

https://pypi.org/project/thapbi-pict/0.9.6/

Updated the default database, focused on curation to remove uninformative entries:

• Now using the May 2021 NCBI taxonomy, which moved Phytophthora versiformis out of the unclassified Phytophthora (so we now accept it). However, the curated sequence is shared with Phytophthora castanetorum & Phytophthora quercina.
• Narrowed the genus level NCBI import to the Peronosporales & Pythiales only, having not seen any matches outside these groups.
• Left primer the NCBI import before look for 32bp leader. This removes a leading G in many sequences where the ~32bp leader started TT rather than TTT after the left primer site.
• Limited the import to sequences up to 450bp only, which dropped some untrimmed sequences lacking a match to the right primer, and the curated Nothophytophthora caduca entry as too long.
• Ignoring GQ149496/JF916542 as probably not Phytophthora.

Also added a simple distance matrix output format to the edit-graph command.