Mstrio-py

- Release has been yanked due to compatibility issue with 11.1.x environments

Major changes

- introduced functionality for updating existing Cubes
- improved fetching performance by up to 50%
- added support for cross-tabbed Reports
- added support for Reports with subtotals
- added basic support for Reports with attribute forms
- extended `Dataset` class with the `certify()` method
- implemented asynchronous download of Cubes and Reports
- applied revamped MicroStrategy REST API import-related endpoints
- reworked GUI’s data modeling functionality

Bug fixes

- fixed issues with Cube / Report filtering during import
- improved user experience for the GUI's login page
- added handling of various forms of environment's base URL
- resolved issues with importing / exporting Datasets containing special
characters

- optimized downloading speed for filtered Reports
- improved performance when downloading unfiltered Cubes / Reports
- improved performance when filtering by attributes and metrics

Major changes

- added `Cube` and `Report` classes to provide more flexibility when interacting
with Cubes and Reports. These new classes provide the ability to select
attributes, metrics, and attribute elements before importing them to Python as
`pandas` DataFrames
- added `Dataset` class that allows defining and creating multi-table cubes from
multiple DataFrames, with improved data upload scalability, and the ability to
define the Dataset within a specific folder
- introduced graphical user interface to access the MicroStrategy environment
using interactive Jupyter Notebook add-in

Bug fixes

- ensured session cookies are passed when closing the connection

- minor bug fixes

- initial PyPI release (25 July 2018)