Pbipy

Release adds support for Workspaces (Groups). Library users can now use `pbypi` to administer the Workspaces in their Power BI instances.

**Full Changelog**: https://github.com/andrewvillazon/pbipy/compare/v2.0.3...v2.1.3

New Features

* Implements a new `Group` resource, representing a Power BI Workspace.
* `Group` objects can list users and their access, add users, update existing permissions, and remove user permissions.
* The `PowerBI` client can list visible Workspaces, create a new Workspace, and delete an existing Workspace.

This release sees a redesign of the previous API towards a simpler and more user friendly interface.

Previously, interactions with the Rest API involved long-winded method calls such as `pbi.datasets.get_refresh_history_in_group()` or `pbi.datasets.get_refresh_history()`. These now come straight off the associated object, e.g., `dataset.refresh_history()`.

Breaking Changes:

* Redesign api.

Features:

* Full support for all Dataset operations.