Uronode update version 2.8.1

Brian n1uro just released a minor update. To correct some issues.

Download https://sourceforge.net/projects/uronode/files/latest/download

12/07/2017 v2.8.1
Spotted and fixed an issue in the D command within router.c that I somehow
introduced in regards to columns not equalling a full 4x4. Locally it
didn't show but remotely it did. When one ran a D command and there were less
than 4 columns a carriage return/new line was not sent making the user's
screen look "stuck" when in fact it was not. Fixed!.. before bugs were
reported :)

Bugs i love bugs.