StratoBash has been updated to Unity 5.6.5p4.

Also, a new launch parameter (also known as argument) has been added:

–sensitivity=<mouse sensitivity multiplier>

The default is:

–sensitivty=1.0

This would double the mouse sensitivity:

–sensitivity=2.0

Here are the instructions for setting launch options:

https://support.steampowered.com/kb_article.php?ref=1040-JWMT-2947