Implement test cases to check for improper reference count handling in
connection with non-c-contiguous arrays. See #22.

Resolve "Add more information to PyPI page"

See merge request !17

Resolve "Add support for Python 3.7"

See merge request !16

See https://github.com/PyCQA/pylint/issues/2128

Implement the requested feature in C++. If indices=True is passed to the
intersect method, it returns a tuple with the intersected array and a tuple
with the indices of the values in common in both arrays.

Copy the test cases for intersect() and pass the indices=True argument to the
intersect method. The return value should then include the indices of the
values in common in both arrays. This test case is expected to fail since there
is no implementation for for indices=True.

This reverts commit 5d5de169.

Conflicts:
	README.md
	setup.py

Move the END-OF-RST boundary to a new line, in order to have the information
about the default algorithm in the README and package description.

Build against the fixed version numpy==1.14 and add the dependency numpy>=1.14.
If the user has an older version, pip will automatically install the newer
version. I assume that a version released in the future is still compatible with
numpy==1.14 build.

Add a CI job, which tries to install and use the package when numpy 1.7 is
already installed.

Resolve "Set up deployment and add metadata"

Closes #9 and #14

See merge request !11

Add -P to nosetests
Fix weird pylint problem by testing __init__ only

Moving the sortednp python package forces all testing scripts to use the
installed package as opposed to the local one. This is mandatory, because the
local package does not have 'sortednp._internal'.