Bump to 0.7.0

newsbox/__init__.py

 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
-__version__ = '0.6.15'
+__version__ = '0.7.0'

tbump.toml

 [version]
-current = "0.6.15"
+current = "0.7.0"
 
 # Example of a semver regexp.
 # Make sure this matches current_version before