Prep for M1 announcement

[tseaver]

Remaining work to "launch" M1:

Code

• Finish "API buffing work" (Smooth out API surfaces before M1 #336 and implementing PRs)
• API docs cleanup pass
• Check Python3 support in deps one last time (Ensure Python 3 support #91, particularly protobuf)

LGTMs

• Solicit an LGTM from @GoogleCloudPlatform/cloud-datastore
• Find out if there are other teams we should get an LGTM for...

[dhermes]

/cc @jgeewax Only the first (@GoogleCloudPlatform/gcloud) shows up, I assume @tseaver is hesitating to @ mention by using back-ticks because we're unsure which team to cc.

[jgeewax]

/cc @GoogleCloudPlatform/cloud-datastore

[dhermes]

There is really no context for this anymore.

@jgeewax Please re-open if we have a "plan" of an announcement at any point.