BUG: allow plot, boxplot, hist and completion on GroupBy objects
BUG: catch attribute error for raw ndarrays to avoid duplicate plots
DOC: add frame tab completion example in 10min.rst
DOC: doc fixups
Merge pull request #5111 from cpcloud/infer-dist-doc-build-failure

DOC: doc fixups
Merge pull request #5105 from cpcloud/enable-groupby-plot-and-completion

BUG: allow plot, boxplot, hist and completion on GroupBy objects