e-terms now use `asarray` instead of `array`, as suggested by @mdboom
Add explicit exeption if equinox is not a scalar as suggested by @astrofrog
make tests py 3.x compliant via `unicode`->`six.text_type`
fixed path to extern
add tests for array separations
Fix #1322: Angle repr should use flexible float representation by default.
Allow initializing a Table from a Row
Allow use of Row in hstack and vstack
Add test_init_from_row
Add tests
Update docs
Define dimensionless_unscaled differently so it can be imported more easily
Remove definition of dimensionless_unscaled from __init__.py
Merge pull request #1554 from mhvk/units-no-import-dimensionless

Define dimensionless_unscaled differently so it can be imported more easily
Define __index__ (closes #1557)
Initial GroupedTable functionality: create table with indexes
Add basic aggregate method
Allow for numpy array input for groupby keys
Simplify _groupby by using Table methods
Add column aggregate method