feat: send quota project id in x-goog-user-project for OAuth2 credentials (#412)
* feat: send quota project id in x-goog-user-project header for OAuth2 credentials (#400)
When the 3LO credentials are used, the quota project ("quota_project_id") is sent on every outgoing request in the x-goog-user-project HTTP header/grpc metadata. The quota project is used for billing and quota purposes.
* feat: add `__setstate__` and `__getstate__` to `oauth2.credentials` class
diff --git a/docs/reference/google.auth.crypt.base.rst b/docs/reference/google.auth.crypt.base.rst
new file mode 100644
index 0000000..a899650
--- /dev/null
+++ b/docs/reference/google.auth.crypt.base.rst
@@ -0,0 +1,7 @@
+google.auth.crypt.base module
+=============================
+
+.. automodule:: google.auth.crypt.base
+ :members:
+ :inherited-members:
+ :show-inheritance: