feat: set release_status to beta (#5)

The underlying API is beta, and the surface has been relatively stable for >1 year.

.repo-metadata.json

@@ -4,7 +4,7 @@
   "product_documentation": "https://cloud.google.com/error-reporting",
   "client_documentation": "https://googleapis.dev/python/clouderrorreporting/latest",
   "issue_tracker": "https://issuetracker.google.com/savedsearches/559780",
-  "release_level": "alpha",
+  "release_level": "beta",
   "language": "python",
   "repo": "googleapis/python-error-reporting",
   "distribution_name": "google-cloud-error-reporting",

README.rst

@@ -1,7 +1,7 @@
 Python Client for Stackdriver Error Reporting
 =============================================
 
-|pypi| |versions| 
+|beta| |pypi| |versions|
 
 The Stackdriver `Error Reporting`_ API counts, analyzes and aggregates the
 crashes in your running cloud services.  A centralized error management
@@ -16,6 +16,8 @@ to receive email and mobile alerts on new errors.
 .. _Error Reporting: https://cloud.google.com/error-reporting/
 .. _Client Library Documentation: https://googleapis.dev/python/clouderrorreporting/latest
 .. _Product Documentation: https://cloud.google.com/error-reporting/reference/
+.. |beta| image:: https://img.shields.io/badge/support-beta-orange.svg
+   :target: https://github.com/googleapis/google-cloud-python/blob/master/README.rst#beta-support
 .. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-error-reporting.svg
    :target: https://pypi.org/project/google-cloud-error-reporting/
 .. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-error-reporting.svg

setup.py

@@ -27,7 +27,7 @@
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'
 # 'Development Status :: 5 - Production/Stable'
-release_status = "Development Status :: 3 - Alpha"
+release_status = "Development Status :: 4 - Beta"
 dependencies = ["google-cloud-logging>=1.14.0, <2.0dev"]
 extras = {}