chore: release 1.19.0 (#552)

* 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 18df080..cef09d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,24 @@
 
 [1]: https://pypi.org/project/google-auth/#history
 
+## [1.19.0](https://www.github.com/googleapis/google-auth-library-python/compare/v1.18.0...v1.19.0) (2020-07-09)
+
+
+### Features
+
+* add quota project to base credentials class ([#546](https://www.github.com/googleapis/google-auth-library-python/issues/546)) ([3dda7b2](https://www.github.com/googleapis/google-auth-library-python/commit/3dda7b2ab88aba7941b8b5281b4acbc7db74169b))
+* check 'iss' in `verify_oauth2_token` ([#500](https://www.github.com/googleapis/google-auth-library-python/issues/500)) ([c05b8b5](https://www.github.com/googleapis/google-auth-library-python/commit/c05b8b52e3bbc096cf32e2d4bb5bd45986d3cd04))
+
+
+### Bug Fixes
+
+* migrate signBlob to iamcredentials.googleapis.com ([#553](https://www.github.com/googleapis/google-auth-library-python/issues/553)) ([038ae1b](https://www.github.com/googleapis/google-auth-library-python/commit/038ae1b78dc83e44ad39ef7ba15c607f62232087))
+
+
+### Documentation
+
+* remove 3.4 from supported versions list ([#549](https://www.github.com/googleapis/google-auth-library-python/issues/549)) ([8c84d0f](https://www.github.com/googleapis/google-auth-library-python/commit/8c84d0fb36d9eba6b319964ca0a22501efca805b))
+
 ## [1.18.0](https://www.github.com/googleapis/google-auth-library-python/compare/v1.17.2...v1.18.0) (2020-06-18)
 
 
diff --git a/setup.py b/setup.py
index 82259d5..9327cf6 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@
 with io.open("README.rst", "r") as fh:
     long_description = fh.read()
 
-version = "1.18.0"
+version = "1.19.0"
 
 setup(
     name="google-auth",