Bump version to 0.7.0

Author: juhasch

CHANGELOG.md

@@ -20,9 +20,10 @@ Unreleased (aka. GitHub master)
 0.7.0
 -----
 
- - Remove dependency on latex_envs
- - Remove scripts entry in setup.py
- 
+ - Remove dependency on latex_envs [#1603](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1603)
+ - Remove scripts entry in setup.py [#1612](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1612)
+ - Fix typos [#1604](https://github.com/ipython-contrib/jupyter_contrib_nbextensions/pull/1604)  
+
 0.6.0
 -----
  - Fix CI