[TRACKING] Move all packages into subpackages

[dhermes]

• Move core (Moving core into designated package. #2367, Moving test _helpers back into library. #2394, Modifying setup.py to separate duplicated content. #2393, Preparing PyLint for subpackage breakup. #2392)
• Move bigtable (Move bigtable code into a subpackage #2410)
• Update Makefile.bigtable_v2 (or hopefully just depend on an autogenerated package, Use GAX generated libraries for Datastore and Bigtable #2128) (Updating Bigtable and Datastore autogenerate makefiles. #2452)
• Put happybase repo on top of bigtable implementation (Updating docs for latest configuration. google-cloud-python-happybase#9, Switching from nose to py.test. google-cloud-python-happybase#10, Fixing up licenses. google-cloud-python-happybase#11, Upgrading from gcloud to google-cloud-bigtable. google-cloud-python-happybase#12, Bringing system test scripts up to date. google-cloud-python-happybase#13, Bringing scripts/ up to date with upstream. google-cloud-python-happybase#14, Final clean-up to bring HappyBase project up to date. google-cloud-python-happybase#15)
• Move bigquery (Move bigquery code into a subpackage #2418)
• Move storage (Move storage code into a subpackage #2416)
• Move datastore (Move datastore code into a subpackage #2417)
• Update Makefile.datastore (or hopefully just depend on an autogenerated package, Use GAX generated libraries for Datastore and Bigtable #2128) (Updating Bigtable and Datastore autogenerate makefiles. #2452)
• Move pubsub (Move pubsub code into a subpackage #2419)
• Move logging (Move logging code into a subpackage #2420)
• Fix RTD breakage (ReadTheDocs broken by moving subpackages #2405, Adding docs/requirements.txt to allow RTD local deps. #2444, Re-ordering local docs directories based on dependency order. #2445, Upgrading versions of GAPIC and gRPC generated libraries. #2453, Upgrading version of oauth2client due to GAPIC/GAX conflict. #2455)
• Move language (Move language code into a subpackage #2429)
• Move vision (Move vision code into a subpackage #2433)
• Move speech (Move speech code into a subpackage #2431, Move speech code into a subpackage **AND** remove all remnants of umbrella packages #2438)
• Move monitoring (Move monitoring code into a subpackage #2430)
• Move resource_manager (Move resource manager code into a subpackage #2435)
• Move translate (Move translate code into a subpackage #2432)
• Move dns (Move dns code into a subpackage #2428)
• Move error_reporting (Move error reporting code into a subpackage #2436)
• Fix-up :: lines in README files (Move dns code into a subpackage #2428 (comment), Replace :: with .. code-block:: console. #2581)
• Fix install from source instructions (No installation links for installing from source #2437, Removing "install from source" instructions. #2447)
• Make testing fast again (after compromises during rename) (Running restricted set of unit tests on Travis PR. #2484, Adding flexibility to how run_unit_tests determines what to run. #2475, Collapsing sub-package explosion in Travis config into a script. #2473, Moving Travis helpers out of run_pylint into shared module. #2481)
• Figure out how to shadow google-cloud-natural-language (Move language code into a subpackage #2429 (comment), https://gist.github.com/dhermes/a4e097f2f80fd490b256fc3aa2b4a46b)
• Determine proper upper / lower bounds on grpcio and google-cloud-core (Move datastore code into a subpackage #2417 (comment))
• Edit global / umbrella README to refer to all subpackages (Preparing for a release of all packages. #2442)
• Make script for running coverage report
• Make script for running tox envs in Travis (Along the lines of Only run tests for modules affected by a PR #2277)
• DRY in setup.py (Figure out a way to share common pieces of setup.py across subpackages #2395)
• DRY for .coveragerc, MANIFEST.in and setup.cfg
• Figure out the user agent ([QUESTION] What values should we use for our user agent? #2391)
• Script using twine to upload packages on tags (relevant: https://github.com/GoogleCloudPlatform/gcloud-common/issues/138#issuecomment-220830613, Reconsider tag name scheme for RTD #2462) (Adding helpers to push to PyPI on tags. #2837)
• Make a package for all the shared code needed in system tests / or just decide to leave the system tests alone where they are (Split up 'system_tests/' by package? #2458)

[dhermes]

@omaray Via #2441 I just made releases of "all" of our packages:

https://pypi.python.org/pypi/google-cloud-core/0.20.0
https://pypi.python.org/pypi/google-cloud-bigquery/0.20.0
https://pypi.python.org/pypi/google-cloud-bigtable/0.20.0
https://pypi.python.org/pypi/google-cloud-pubsub/0.20.0
https://pypi.python.org/pypi/google-cloud-storage/0.20.0
https://pypi.python.org/pypi/google-cloud-datastore/0.20.0
https://pypi.python.org/pypi/google-cloud-logging/0.20.0
https://pypi.python.org/pypi/google-cloud-monitoring/0.20.0
https://pypi.python.org/pypi/google-cloud-language/0.20.0
https://pypi.python.org/pypi/google-cloud-natural-language/0.20.0
https://pypi.python.org/pypi/google-cloud-dns/0.20.0
https://pypi.python.org/pypi/google-cloud-error-reporting/0.20.0
https://pypi.python.org/pypi/google-cloud-resource-manager/0.20.0
https://pypi.python.org/pypi/google-cloud-translate/0.20.0
https://pypi.python.org/pypi/google-cloud-vision/0.20.0
https://pypi.python.org/pypi/google-cloud/0.20.0

So @jonparrott you can start updating samples if you like.

[omaray]

Sweet!