Welcome message and citation function

[Christian Himpe]

Hi,

building todays repo head, I noticed the copyright year in the
welcome message is 2016 (in the README it is 1996--2017). Also the
`citation` function returns the information for version 4.2.2. Maybe
these fixes are planned for (5.) of the release check list?

Best

Christian

P.S.: Maybe you are interested in including a CODE(.ini) file in the
repo, see: https://github.com/gramian/code-ini

-- 
Christian Himpe
Computational Methods in Systems and Control Theory
Max Planck Institute for Dynamics of Complex Technical Systems
Sandtorstr. 1
D-39106 Magdeburg
Germany