Clisops

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Other Changes
^^^^^^^^^^^^^
* Add missing ``rtree`` dependency to ensure correct spatial indexing.

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Other Changes
^^^^^^^^^^^^^
* Update testdata and subset module (34).

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Other Changes
^^^^^^^^^^^^^
* Fixed docs version (25).

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New Features
^^^^^^^^^^^^^
* Integration of xclim subset module in ``clisops.core.subset``.
* Added jupyter notebook with and example for subsetting from xclim.

Other Changes
^^^^^^^^^^^^^
* Fixed RTD doc build.
* Updated travis CI according to xclim requirements.
* Now employing PEP8 + Black compatible autoformatting.
* Pre-commit is now used to launch code formatting inspections for local development.

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Breaking Changes
^^^^^^^^^^^^^^^^
* Replaced use of ``cfunits`` by ``cf_xarray`` and ``cftime`` (new dependency) in ``roocs_utils.xarray_utils``.

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Fixing pip install

Bug Fixes
^^^^^^^^^
* Importing and using roocs-utils when pip installing now works