Pytest-helper

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New features:

* Added a new option ``pskip`` to ``script_run`` which is the same as ``skip`` but
it first calls ``set_package_attribute`` to cause the script to run as a package.
Useful normally-running a script inside a package.

Changes:

* Removed the ``set_package`` options to ``script_run`` and ``init`` because they
did not interact well with pytest. It handles package initialization itself.

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New features:

* Now pytest > 3.1 version is required.

* The new ``modify_syspath`` argument is passed to the ``init`` of
``set_package_attribute`` if it is called to implement ``set_package``.
The defaults for ``modify_syspath`` in both ``script_run`` and
``init`` are now to apply it when run from inside a package, but not
otherwise.

* The ``sys_path`` function now takes an argument ``insert_position`` that
determines where in ``sys.path`` the paths are inserted.

* If ``modify_syspath`` was chosen and ``exit=False`` the system path is no
longer automatically restored after the exit.

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New features:

* Added the ``unindent`` function for unindenting multi-line strings. The
function is also made a default import for ``autoimport``.

* The ``approx`` function of pytest is now autoimported by default.

* The ``script-run`` function now passes all the test files to a single run of
pytest by default. For the old behavior of looping over them separately use
``single_run=False``.

* New keyword option ``skip`` to temporarily turn off ``script_run``.

Bug fixes:

* Fixed handling of arguments to command-line arguments passed to
``script_run`` as a string.

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New Features: None.

Bug Fixes:

* Fixed a bug in handling default ``pytest_args`` to ``script_run``.

* Cleaned up imports in test cases.

Other Changes:

* Converted to pass lists to `pytest.main` since passing strings is now
deprecated.

* Edited documentation.

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Initial release.