[prep] v0.3.1 release (#31)

* update changelog

* increment version number

Author: vpchung

docs/changelog/release-notes.md

@@ -9,6 +9,11 @@
 ### Bug fixes
 - Remove custom classes, as to prevent future confusion with synapseclient's classes
 
+## 0.3.1
+
+### Bug fixes
+- Fix Docker image deployment ([#30](https://github.com/Sage-Bionetworks-Challenges/cnb-tools/pull/30))
+
 ## 0.3.0
 
 ### Features

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cnb-tools"
-version = "0.3.0"
+version = "0.3.1"
 description = "Convenience tools/functions for challenges and benchmarking on Synapse.org"
 license = "Apache-2.0"
 authors = ["Sage CNB Team <cnb@sagebase.org>"]