Bump version to 0.6.1

Author: JelteF

setup.py

@@ -173,7 +173,7 @@
     source_dir = 'python2_source'
 
 setup(name='PyLaTeX',
-      version='0.6',
+      version='0.6.1',
       author='Jelte Fennema',
       author_email='pylatex@jeltef.nl',
       description='A Python library for creating LaTeX files',