feat!: Begin using new microgenerator for v2 firestore

.coveragerc

@@ -19,7 +19,9 @@
 branch = True
 
 [report]
-fail_under = 100
+# TODO(https://github.com/googleapis/python-firestore/issues/92): raise this 
+# coverage back to 100%
+fail_under = 97
 show_missing = True
 exclude_lines =
     # Re-enable the standard pragma

.flake8

@@ -16,7 +16,7 @@
 
 # Generated by synthtool. DO NOT EDIT!
 [flake8]
-ignore = E203, E266, E501, W503
+ignore = E203, E231, E266, E501, W503
 exclude =
   # Exclude generated code.
   **/proto/**

docs/index.rst

@@ -1,12 +1,6 @@
 .. include:: README.rst
 
-.. note::
-
-   Because the firestore client uses :mod:`grpcio` library, it is safe to
-   share instances across threads. In multiprocessing scenarios, the best
-   practice is to create client instances *after* the invocation of
-   :func:`os.fork` by :class:`multiprocessing.Pool` or
-   :class:`multiprocessing.Process`.
+.. include:: multiprocessing.rst
 
 API Reference
 -------------

google/cloud/firestore.py

@@ -23,7 +23,7 @@
 from google.cloud.firestore_v1 import DELETE_FIELD
 from google.cloud.firestore_v1 import DocumentReference
 from google.cloud.firestore_v1 import DocumentSnapshot
-from google.cloud.firestore_v1 import enums
+from google.cloud.firestore_v1 import DocumentTransform
 from google.cloud.firestore_v1 import ExistsOption
 from google.cloud.firestore_v1 import GeoPoint
 from google.cloud.firestore_v1 import Increment
@@ -50,7 +50,7 @@
     "DELETE_FIELD",
     "DocumentReference",
     "DocumentSnapshot",
-    "enums",
+    "DocumentTransform",
     "ExistsOption",
     "GeoPoint",
     "Increment",