v2.0.4

Hotfix release for the Python SDK.

Changes in 2.0.4:

• Restored the public client.user.get_subscription() helper and async parity with the current consumer contract
• alerts.list() and alerts.history() now return typed PaginatedResponse objects while keeping dict-style backward compatibility
• Fixed the Python 3.8 CLI typing regression discovered after 2.0.3 so CI is green across supported versions

This release supersedes v2.0.3 and is published on PyPI as stockalert==2.0.4.