Update version to 2.1

I think we will likely call release 3 “v2.1” since that reflects the
magnitude of the change.

docs/source/conf.py

@@ -69,17 +69,17 @@
 
 # General information about the project.
 project = u'EBU-TT-Live Toolkit'
-copyright = u'2016, European Broadcasting Union'
+copyright = u'2017, European Broadcasting Union'
 author = u'European Broadcasting Union'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u'1.0'
+version = u'2.1'
 # The full version, including alpha/beta/rc tags.
-release = u'1.0rc1'
+release = u'2.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.