Test mode of the 0.50.3b version

Hi, guys!

We made a test vesion of the 0.50.3b release. It have the only difference - you can pick any level you want to play. But I warn you that it can affect your progress in the original campaign.

To switch to this version you should go to the Steam library, open properties window by right click on the Steam Squad game, pick betas tab and select opentest option.