Core

• Rename gcloud package as google.cloud and move on
  PyPI from gcloud to google-cloud (#2223, #2334, #2264, #2284)
• Drop support for Python 2.6 (#2051)
• Upgrade to GAX 0.13.0 (#2324, #2336)
• Remove gRPC / GAX restriction to Python 2.7 and removing the
  gcloud[grpc] extra. (#2308, #2203)
• Add missing exception class for '502 Bad Gateway' response code (#2078)
• Bulk spelling / style / grammar docs fix (#2139)
• Upgrade all usage of gRPC from beta to stable (#2149)
• Add shared Operation class for long-running operations (#2165)
• Rename core docs: gcloud-api to google-cloud-api, gcloud-auth
  to google-cloud-auth and gcloud-config to google-cloud-config (#2280)
• Modify user agent metadata for gRPC (#2284, #2286)

Resource Manager

• Add alpha warning to docs (#2345)

Datastore

• Upgrade from v1beta3 to v1 (#2107)
• Add gRPC support (#2097, #2099)
• BREAKING CHANGE: Making batches and transactions more robust to
  failure (#2303, fixes #2297). Now a Batch must call begin()
  before adding mutations.
• Add emulator support for gRPC implementation (#2244)

BigQuery

• Add partition support (#2058)
• Fix docs error about starting a job (#2338)
• Add QueryJob.results method (#2321)
• Add desiganted schema module (#2060)
• Fix docs typo about destination table (#2250)
• Update state values in usage doc (#2251)
• Add list_projects method (#2254)
• Add configuration properties for maximumBillingTier and
  maximumBytesBilled for QueryJobs (#2276)
• Support parsing DATE, INT64, and FLOAT64 columns from Standard SQL tables (#2265, #2347)

Vision

• Initial usage documentation and discussion #2148
• Connection and Client #2167, #2179
• Face detection API #2224
• Label detection API #2237
• Logo detection API #2235
• Landmark detection API #2236
• Text detection API #2299
• Safe search detection API #2319
• Image properties detection API #2320

Pub / Sub

• Re-enable gRPC / GAX by default if it is importable. (#2085)
• Fix bug mapping publish timestamp to result in
  gRPC / GAX implementation (#2262)
• Add emulator support for gRPC / GAX implementation (#2245)

Logging

• Re-enable gRPC / GAX by default if it is importable. (#2085)
• Map gRPC exceptions onto exceptions from
  google.cloud.exceptions (#2094)
• Rename product (Stackdriver) (#2273)
• Docs bug: Rename filter to filter_ (#2279)

Bigtable

• Move HappyBase into its own project (#2109)
• Remove Bigtable undelete (not present in v2) (#2210)
• Add support for Bigtable emulator (#2249)

Monitoring

• Add Group support (#2035)
• Add Factory Methods for Metric/Resource/Timeseries (#2071)
• Fix ValueType link in docs (#2150)
• Add support for comparison filters (#2234)
• Add docs in README (#2054)

Natural Language

• Initial implementation (#2062, #2162, #2164, #2172, #2187, #2189, #2211)