SDK 0.16.0

Added

• Video and Site catalogue change feeds. GET /videos/changes
  (GetVideoChanges) and GET /sites/changes (GetSiteChanges) expose current
  catalogue content and minimal deletion tombstones in all four SDKs. Video
  items include the current detail payload and mergedIntoId for merge
  deletions; Site items include current network and link content. Both feeds
  support a full baseline with Since=0001-01-01T00:00:00Z, accept SinceId
  and PageSize (1–1000), and return hasMore, serverTimeUtc and a nullable
  nextCursor. Tombstones are retained indefinitely, with a guaranteed minimum
  of 90 days. See Catalogue synchronization for paging
  and deletion handling.

Known limitations

• Go timestamp query configurations require a raw URL. The pinned Kiota
  runtime panics when serializing a typed Since. Call the generated change
  builder's WithUrl method with a query encoded using net/url, then
  Get(ctx, nil). This retains typed responses, authentication and redirect
  protection. The Go README gives a
  baseline example; a regression test covers baselines and resumed UUID cursors
  with fractional seconds. Go remains supported from version 1.23.

Closes #45. Issue #23 was already delivered in 0.9.0 and is now closed. Issue #35 remains open pending an upstream API extension.

Validation: CI passed for Python, TypeScript (Node 22 and 24), Go, C# (.NET 8 and 10), and generated-code consistency.