This commit will be tagged:
- v0.5.30
- datastore/v1.1.0
- bigtable/v1.3.0

Change-Id: Iece28786a91e92a6d68b96a3e04c0f2cd66742b9
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/51874
Reviewed-by: kokoro <[email protected]>
Reviewed-by: Chris Cotter <[email protected]>
Reviewed-by: Seth Hollyman <[email protected]>