Added --show-families option to query output.

Works the same as --show-samples, but shows the families.
Indicies -> indices.
Merge branch 'master' of github.com:arq5x/gemini
Added --show-families option.
Update version.py
Update history.rst
Bump requirements to latest release version. Thanks to Long Le
[BUG] fix broken subjects query in comp_hets
Merge branch 'master' of github.com:arq5x/gemini