0.0.2: Minor alpha release

We're pleased to announce the release of q2-diversity 0.0.2. q2-diversity is a QIIME 2 plugin; see 2.qiime.org for more details about QIIME 2. The changes since the last release are detailed in the project's CHANGELOG.md. This is an alpha release and major backwards-incompatible API changes are expected to happen.