MAINT/ENH: fixes #1201 and adds taxonomic assignment results to index page
MAINT: fixes #1292
MAINT: fixes #1339
MAINT: fixes #1352
fixes #1516
ENH: added files that I've accidentally committed in the past
BUG: fixes #1360
REL: added notes on user-facing changes to change log
Merge pull request #1738 from gregcaporaso/quick-fix-party

addressing several "quick fixes" in preparation for 1.9.0