No newline at the end of the file

[LinqLover]

I originally reported this issue here: hpi-swa/Squot#316

It is a common convention that every file should end with a new line. One reason is that they look strange in a Linux shell without it, another reason is to get rid of the warnings from GitHub, Gitlab & Co. See https://stackoverflow.com/q/729692/13994294 for more information. :-)

Can we add a newline character at the end of each file-outed ston file?