Change to release candidate version

Author: jonmmease

CHANGELOG.md

@@ -2,8 +2,7 @@
 All notable changes to `jupyter-dash` will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## 0.3.0 - 2020-07-17
-
+## 0.3.0 - ???
 ### Added
  - Added suport for using JupyterDash in Google Colab ([#27](https://github.com/plotly/jupyter-dash/pull/27))
  - Added support for installing JupyterDash from git using pip: (e.g. `pip install git+https://github.com/plotly/jupyter-dash.git@master`)

jupyter_dash/version.py

@@ -1 +1 @@
-__version__ = "0.3.0"
+__version__ = "0.3.0rc1"