Azure Storage Common Client Library (Track 1 SDK)

The `azure-storage-common` library provides common functionalities and utilities shared across the older Microsoft Azure Storage 'Track 1' client libraries for Python (e.g., `azure-storage-blob` v2.x, `azure-storage-queue` v2.x). It includes classes for managing storage accounts, shared access signatures, and handling exceptions. The current version is 2.1.0, with releases historically tied to new Azure Storage REST API versions, though it is now largely in maintenance mode.