chore: release 0.29.1 (#549)

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+### [0.29.1](https://www.github.com/googleapis/gapic-generator-python/compare/v0.29.0...v0.29.1) (2020-07-23)
+
+
+### Bug Fixes
+
+* use context manager for mtls env var ([#548](https://www.github.com/googleapis/gapic-generator-python/issues/548)) ([d19e180](https://www.github.com/googleapis/gapic-generator-python/commit/d19e1808df9cd2884ae7a449977a479b4829bc1d))
+
 ## [0.29.0](https://www.github.com/googleapis/gapic-generator-python/compare/v0.28.1...v0.29.0) (2020-07-22)
 
 

setup.py

@@ -20,7 +20,7 @@
 
 PACKAGE_ROOT = os.path.abspath(os.path.dirname(__file__))
 
-version = "0.29.0"
+version = "0.29.1"
 
 with io.open(os.path.join(PACKAGE_ROOT, "README.rst")) as file_obj:
     README = file_obj.read()