v0.1.5

Features

• Added SharepointManagerPool for thread-safe lazy caching of one manager per
  SharePoint site, shared credentials and document-library configuration, and
  lifecycle cleanup; exported it with get_sharepoint_manager.

Bugfixes

• Allowed URL-targeted operations to resolve same-tenant resources when the
  credential can access them, with strict=True available to require the
  configured site while allowing other drives or libraries in that site.
• Routed URL operations through the resolved drive while preserving site/drive
  boundaries for path and object workflows.

Other

• Added offline pool and URL-boundary verification coverage and updated the
  security and contract documentation.