Hello everyone,
In regards to the newest version, It appears there's a major bug that has appeared for people with newer versions of the game that caused Mouse Aim controls to mess up.
I've moved v1.2.1 to the testers branch and have made it publically available for those that wish to use V1.2.1 with the added available inputs.
I'll investigate the problem behind this, do some more testing and release a new patch it once I'm certain the issue is fixed. For the time being Controllers will be unavailable till I solve this issue.
I am very sorry to all that has encountered this problem when launching the game.
Zer0