Making release for most packages. (#4296)

* Making release for most packages.

Every package except those that have already been released
(`google-cloud-core`, `google-api-core`, `google-cloud-bigquery`):

- `google-cloud`
- `google-cloud-bigtable`
- `google-cloud-datastore`
- `google-cloud-dns`
- `google-cloud-error-reporting`
- `google-cloud-firestore`
- `google-cloud-language`
- `google-cloud-logging`
- `google-cloud-monitoring`
- `google-cloud-resource-manager`
- `google-cloud-runtimeconfig`
- `google-cloud-spanner`
- `google-cloud-speech`
- `google-cloud-storage`
- `google-cloud-trace`
- `google-cloud-translate`
- `google-cloud-videointelligence`
- `google-cloud-vision`

* Adding changelog files for each package.

Author: dhermes

CHANGELOG.md

@@ -1,10 +1,14 @@
 # Changelog
 
-## v0.1.1
+[PyPI History][1]
+
+[1]: https://pypi.org/project/google-api-core/#history
+
+## 0.1.1
 
 - Upgrading `grpcio` dependency from `1.2.0, < 1.6dev` to `>= 1.7.0` (#4280)
 
-## v0.1.0
+## 0.1.0
 
 Initial release