chore: release 1.19.0 (#39)

* updated CHANGELOG.md [ci skip]

* updated setup.cfg [ci skip]

* updated setup.py

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 123c1f2..cbc6a6c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-api-core/#history
 
+## [1.19.0](https://www.github.com/googleapis/python-api-core/compare/v1.18.0...v1.19.0) (2020-06-05)
+
+
+### Features
+
+* **client_options:** add new client options 'quota_project_id', 'scopes', and 'credentials_file' ([a582936](https://www.github.com/googleapis/python-api-core/commit/a58293601d6da90c499d404e634a979a6cae9708))
+
 ## [1.18.0](https://www.github.com/googleapis/python-api-core/compare/v1.17.0...v1.18.0) (2020-06-04)
 
 
diff --git a/setup.py b/setup.py
index 1f5f4ad..cea8a85 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 name = "google-api-core"
 description = "Google API client core library"
-version = "1.18.0"
+version = "1.19.0"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'