ENH: support for QIIME 1 feature metadata files in qiime.Metadata
ENH: support for QIIME 1 feature metadata files in qiime.Metadata

qiime.Metadata and qiime.MetadataCategory reprs use underlying DataFrame repr instead of JSON. Added HTML repr to qiime.Metadata.

Pair-programmed with @jakereps.

biocore/qiime2,jairideout/qiime2,jakereps/qiime2,nervous-laughter/qiime2,ebolyen/qiime2,jakereps/qiime2,biocore/qiime2,qiime2/qiime2,thermokarst/qiime2,thermokarst/qiime2,qiime2/qiime2