Release 1.0.0rc0 (Part 1/2) release commit

- Update version.py files
- Marked releases in changelogs

Author: aabmass

opentelemetry-exporter-gcp-monitoring/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## Version 1.0.0a0
+
+Released 2021-04-22
+
 - Drop support for Python 3.5
   ([#123](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/123))
 - Split cloud trace and cloud monitoring exporters into separate packages

opentelemetry-exporter-gcp-monitoring/src/opentelemetry/exporter/cloud_monitoring/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.19.dev0"
+__version__ = "1.0.0a0"

opentelemetry-exporter-gcp-trace/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## Version 1.0.0rc0
+
+Released 2021-04-22
+
 - Drop support for Python 3.5
   ([#123](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/123))
 - Split cloud trace and cloud monitoring exporters into separate packages

opentelemetry-exporter-gcp-trace/src/opentelemetry/exporter/cloud_trace/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.19.dev0"
+__version__ = "1.0.0rc0"

opentelemetry-propagator-gcp/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## Version 1.0.0rc0
+
+Released 2021-04-22
+
 - Drop support for Python 3.5
   ([#123](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/123))
 - Split tools package into separate propagator and resource detector packages

opentelemetry-propagator-gcp/src/opentelemetry/propagators/cloud_trace_propagator/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.19.dev0"
+__version__ = "1.0.0rc0"

opentelemetry-resourcedetector-gcp/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## Version 1.0.0a0
+
+Released 2021-04-22
+
 - Drop support for Python 3.5
   ([#123](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/123))
 - Split tools package into separate propagator and resource detector packages

opentelemetry-resourcedetector-gcp/src/opentelemetry/resourcedetector/gcp_resource_detector/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.19.dev0"
+__version__ = "1.0.0a0"