Bug fixes
* Fixed a typing bug in the `to_excel`, `to_pandas`, `to_arrow`, `to_polars`, `to_feather`, and `to_parquet` AnalyticsReport methods
* Added empty data checks for Arrow and Polars conversions
Other changes
* Exceptions thrown on invalid requests have been overhauled (53)
* You should still catch `InvalidRequest` exceptions
* `InvalidFeatures` and `InvalidFeatureSet` exceptions are deprecated -- they still exist for backward compatibility, but now function identically to `InvalidRequest`
* Error messages have been drastically improved, both in style and substance