Better use of __array_finalize__ and __array__ in quantity/longitude
Correct mistakes in use of wraps, views, and instances in CartesianPoint
(viz., __quantity_instance__, __quantity_view__, and __array_wrap__)
Add test cases for Quantity with record-array dtype
Expand comment on making scalars 0-dimensional arrays
Merge pull request #1848 from mhvk/quantity-improved-array-views

Better use of __array_finalize__ and __array__ in quantity/longitude/CartesianPoints