Analytix

I know I said there wouldn't be another rc version but this one does quite a bit of useful stuff, so thought there should be.

Fixes

* Fixed a bug (yes, *totally* a bug) where the AsyncAnalytics class couldn't retrieve reports

Changes

* Changed all data constants to be sets natively so they don't have to be converted to sets every single request

Beyond that, it's just adding docs and stuff. Playlists and 100% test coverage needs to be done before stable v3.0.0 releases, but shouldn't be *too* long, in theory.

The first (and probably only) v3 pre-release is out! This version is just for people to mess around with the new stuff before it properly comes out. Documentation, final tests, and a migration guide will come out nearer the time v3 stable launches -- **the current docs do not reflect v3**.

You can install it using:
py
pip install -U analytix --pre


Here are some highlights:

* Async support
* Typehinting
* Token refreshing

You'll probably need to look at the source code to figure out what's going on, but as it's all typehinted it should be easier.

Let me know if you find any issues (:

**NOTE:** I've already found an issue in AsyncAnalytics not being able to retrieve reports -- that's been fixed in the development version.

This release mainly focuses on workflow improvements ready for v3 development, as well as updating the out-of-date README.

Fixes

- Fix issue where extraneous newlines are added when writing to CSV files on Windows
- Fix bug where some reports created by the monthly factory method would have the wrong number of rows

CI and testing

- Added a full CI testing suite
- Improved the local testing suite

- Fixed issue where setting the start or end date to anything other than the beginning of the month would cause a `HTTPError` if 'month' was passed as a dimension.
- Corrected some problems with the docs.

Added new factory methods to help retrieve reports easier:

- `daily_analytics`
- `monthly_analytics`
- `regional_analytics`
- `top_videos`

To find out how to use these in more detail, check the [library reference](https://analytix.readthedocs.io/en/latest/app/yt-analytics.html).