v1.16.0 Release

Bigtable

• doc: remove not GA warning from bigtable backup methods (#4601)
• doc: restore quickstart's region tags (#4525)
• fix: builds on 64-bit Windows (#4523)
• fix: warnings under Windows+MSVC+x86 (#4515)
• feat: CompletionQueue::RunAsync with no arguments (#4450)

Storage

BREAKING CHANGES

• fix!: incorrect type in OLM condition (#4597)
  changed the created_before field in LifecycleRuleCondition from a time
  point to a date

Other Changes

• fix: GCE credentials response handling (#4739)
• feat: add a function to delete resumable upload in client (#4696)
• doc: include guidelines for bucket names (#4688)
• feat: add a function DeleteResumableUpload to RawClient (#4678)
• fix: missing CreateDefaultClientOptions overload (#4677)
• feat: a request type to delete pending resumable uploads (#4617)
• feat: disable MD5Hash by default (#4591)
• feat: Add startOffset and endOffset (#4518)
• fix: warnings under Windows+MSVC+x86 (#4515)
• fix: avoid chunked transfer encoding (#4506)
• fix: avoid unnecessary chunk to finalize uploads (#4504)
• feat: Add Client::ListObjectsAndPrefixes (#4494)
• fix: multiple problems under Windows+MSVC+x86 (#4502)
• feat: reduce data copies in uploads (#4496)
• fix: workaround min/max macros on Windows (#4490)
• feat: reduce copies during uploads (#4489)
• feat: Add UploadFromOffset and UploadLimit to UploadFile (#4473)
• feat: HTTP requests with many buffers (#4480)
• feat: Add value_or() to options params and headers (#4408)

Spanner

BREAKING CHANGES

• refactor!: spanner::Timestamp implementing using absl::Time (#4625)
  spanner::Timestamp no longer allows construction from or conversion to
  a chrono time point with picosecond precision
• refactor!: use absl::CivilDay for "date" type (#4600)
  absl::CivilDay's constructors are explicit (by design), where as the old
  spanner::Date 3-arg constructor was not explicit.

Fix issue #4516: atomicity is violated if the first operation in a RW
Transaction fails.
If this occurs, the library now explicitly begins a new transaction and
retries the failed operation. This ensures subsequent operations using the
same Transaction object are in fact executed in the same Spanner
transaction.

• fix: begin a has_begin transaction in Rollback() (#4731)
• fix: handle ExecuteBatchDml returning OK with no results (#4724)
• fix: use the updated transaction id in ReadImpl (#4722)
• fix: explicitly begin failed implicit begin transactions (#4706)
• feat: handle invalid transactions in ConnectionImpl methods
• feat: store a Status when invalidating Transactions (#4670)
• feat: support moving a Transaction into an error state (#4545)

Other Changes

• doc: note that NUMERIC columns are not yet available (#4738)
• feat: add google-cloud-resource-prefix to non-admin operations (#4703)
• fix: date formatting with negative years (#4614)
• feat: add google::cloud::spanner::Numeric (#4418)
• fix: warnings under Windows+MSVC+x86 (#4515)
• feat: log the result for future<StatusOr<T>> (#4746)

Common libraries

BREAKING CHANGES

• fix!: incorrect type in OLM condition (#4597)
  changed the created_before field in LifecycleRuleCondition from a time
  point to a date

Other Changes

• fix: timestamp proto encoding works before the epoch and with extreme values (#4611)
• feat: CompletionQueue::RunAsync with no arguments (#4450)
• feat: log exceptions in example driver (#4453)