Centralize splash screen horizontally

First of all, thanks for this amazing VIM plugin. It is a simple but crazy useful idea, that brings VIM way closer to being a full IDE.

My only request/question: is there a way to have the splash screen auto centralized? When Vim or GVim are expanded, attached is an example of how it looks like. I find it particularly relevant because I set my GVim to re-display Startify whenever all buffers are closed.

Thanks a lot!

No file or test is named in the issue. Start by reproducing the splash screen in expanded Vim and GVim, then trace the Startify screen rendering; done means the splash content is horizontally centered when shown, including after all buffers are closed.

Written by the indexing model from the issue text.