Revert "Move imports to top of module"

This reverts commit 75a594e3371208013b40d72ed8044135a863dfd8.
Merge branch 'fizzy' of https://github.com/EESI/FizzyQIIME into fizzy
correctly assign variables in our enumerate loop
update Changelog to add PyFeast version and clarify the fizzy line
change Biom to BIOM and fix a typo
remove write_output_file, remove tearDown and most of SetUp, return reduced set instead of writing to file. do file writing in the scritps
Merge branch 'fizzy' of https://github.com/EESI/FizzyQIIME into fizzy