Update taxonomy to 0.9.0

[BiocondaBot]

Update taxonomy: 0.8.3 → 0.9.0

Info	Link or Description
Recipe	recipes/taxonomy (click to view/edit other files)
Summary	Python and Rust library for loading, saving, and manipulating taxonomic trees
Home	https://github.com/onecodex/taxonomy/
Releases	https://github.com/onecodex/taxonomy/tags
Author	@onecodex

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