chore(cloudevents): release stable v2.0.0

Signed-off-by: Yurii Serhiichuk <savik.ne@gmail.com>

Author: xSAVIKx

CHANGELOG.md

@@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.0.0]
+
+### Changed
+
+- Released stable v2.0.0. See [migration](./MIGRATION.md) for details and migration
+  guidelines. ([#279])
+
 ## [2.0.0.alpha6]
 
 ### Changed
@@ -336,3 +343,4 @@ CloudEvents v2 is a rewrite with ongoing development ([#271])
 [#275]: https://github.com/cloudevents/sdk-python/pull/275
 [#276]: https://github.com/cloudevents/sdk-python/pull/276
 [#278]: https://github.com/cloudevents/sdk-python/pull/278
+[#279]: https://github.com/cloudevents/sdk-python/pull/279

samples/http-image-cloudevents/requirements.txt

@@ -2,4 +2,4 @@ flask
 requests
 Pillow
 pytest
-cloudevents==2.0.0a6
+cloudevents==2.0.0

samples/http-json-cloudevents/requirements.txt

@@ -1,4 +1,4 @@
 flask
 requests
 pytest
-cloudevents==2.0.0a6
+cloudevents==2.0.0

src/cloudevents/__init__.py

@@ -12,4 +12,4 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-__version__ = "2.0.0-alpha6"
+__version__ = "2.0.0"