Last PR before the 2.0 Alpha 4 release (#2274)

* Initial CHANGELOG.md edits for the 2.0 Alpha 4 release

* Added PR #2275 to CHANGELOG.md for the 2.0 Alpha 4 release

* Update k8s image tags for the 2.0 Alpha 4 release

* Update version.py for the 2.0 Alpha 4 release

CHANGELOG.md

@@ -17,6 +17,22 @@ For reference, the possible headings are:
 * **External Contributors** to list contributors outside of BigchainDB GmbH.
 * **Notes**
 
+## [2.0 Alpha 4] - 2018-05-09
+
+Tag name: v2.0.0a4
+
+### Changed
+
+The Kubernetes liveness probe for the BigchainDB StatefulSet was improved to check the Tendermint /status endpoint in addition to the Tendermint /abci_info endpoint. [Pull request #2275](https://github.com/bigchaindb/bigchaindb/pull/2275)
+
+### Fixed
+
+[Pull request #2270](https://github.com/bigchaindb/bigchaindb/pull/2270) resolved [issue #2269](https://github.com/bigchaindb/bigchaindb/issues/2269).
+
+### Notes
+
+There's a new [page in the docs about storing files in BigchainDB](https://docs.bigchaindb.com/en/latest/store-files.html). [Pull request #2259](https://github.com/bigchaindb/bigchaindb/pull/2259)
+
 ## [2.0 Alpha 3] - 2018-05-03
 
 Tag name: v2.0.0a3

bigchaindb/version.py

@@ -1,2 +1,2 @@
-__version__ = '2.0.0a3'
-__short_version__ = '2.0a3'
+__version__ = '2.0.0a4'
+__short_version__ = '2.0a4'

k8s/bigchaindb/bigchaindb-ss.yaml

@@ -154,7 +154,7 @@ spec:
           timeoutSeconds: 15
       # BigchainDB container
       - name: bigchaindb
-        image: bigchaindb/bigchaindb:2.0.0-alpha3
+        image: bigchaindb/bigchaindb:2.0.0-alpha4
         imagePullPolicy: Always
         args:
         - start

k8s/dev-setup/bigchaindb.yaml

@@ -34,7 +34,7 @@ spec:
       terminationGracePeriodSeconds: 10
       containers:
       - name: bigchaindb
-        image: bigchaindb/bigchaindb:2.0.0-alpha3
+        image: bigchaindb/bigchaindb:2.0.0-alpha4
         imagePullPolicy: Always
         args:
         - start