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.

packages/google-cloud-language/CHANGELOG.md

@@ -0,0 +1,21 @@
+# Changelog
+
+[PyPI History][1]
+
+[1]: https://pypi.org/project/google-cloud-language/#history
+
+## 0.30.0
+
+### Documentation
+
+- Added link to "Python Development Environment Setup Guide" in
+  project README (#4187, h/t to @michaelawyu)
+
+### Dependencies
+
+- Upgrading to `google-cloud-core >= 0.28.0` and adding dependency
+  on `google-api-core` (#4221, #4280)
+- Deferring to `google-api-core` for `grpcio` and
+  `googleapis-common-protos`dependencies (#4096, #4098)
+
+PyPI: https://pypi.org/project/google-cloud-language/0.30.0/

packages/google-cloud-language/setup.py

@@ -52,6 +52,7 @@
 
 REQUIREMENTS = [
     'google-cloud-core[grpc] >= 0.28.0, < 0.29dev',
+    'google-api-core >= 0.1.1, < 0.2.0dev',
     'google-gax >= 0.15.14, < 0.16dev',
 ]
 EXTRAS_REQUIRE = {
@@ -60,7 +61,7 @@
 
 setup(
     name='google-cloud-language',
-    version='0.29.0',
+    version='0.30.0',
     description='Python Client for Google Cloud Natural Language',
     long_description=README,
     namespace_packages=[