Hoki

**Added axis labels to default CMD plots**


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_Corresponding [pypi release](https://pypi.org/project/hoki/1.2.1b0/)_

The CMD Release


New Features
* `hoki.cmd`: a module containing the `CMD` class which allows users to make their own synthetic Colour-Magnitude Diagrams from the BPASS models. It includes a plotting function like the one contained in `HRDiagrams`.

* `hoki.load.unpickle()`: a quick function to unpickle your files in one line instead of 3. Useful for those pickling CMD objects.

* `hoki.load.set_models_path()`: A function to update the `settings.yaml` file with the users's own absolute path to the stellar models so they don't have to locate `settings.yaml` and edit it manually`.

Why is it in beta now?
We've done more user testing, fixed a few bugs and have added most core features of `hoki`.
We now look forward to users breaking the code and reporting the bugs.

What's next?
**Spectra !** I've started working on Integral Field Unit data and will be playing with putting together BPASS spectra and observations.

**If you have any feature request, let me know by opening an issue!**

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_Corresponding [pypi release](https://pypi.org/project/hoki/1.2.0b0/)_

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A small and basic doppler correction feature was added - `dopcor`.

The `spec.py` module was created - this is where `dopcor` resides. We enticipate that `spec` will contain an extensive suites of spectroscopic utilities in the future to use with the BPASS synthetic spectra (and potential other spectra in similar formats).

Backwards compatibility should be conserved - please raise an issue if that is not the case.

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This is our first pre-release. Very early in the development process, it already contains some of the key features of `hoki`. Mainly:

- Loading in BPASS outputs to convenient data structures (pandas.DataFrames or custom objects)
- HRDiagram tools
- Creation of publication ready plots.

This early release was motivated by an upcoming workshop in September 2019 in Warwick.

**Note:**
So far, `hoki` has only been tested locally on a python 3.5 and python 3.6 release.

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*We'd be delighted to hear your feedback! Feel free to drop an issue as you come to find bugs.*