Unfortunately I had to disable the Steam addon for the MacOS version because it made the game unplayable. The consequences of this will be:

• No achievements for Mac users
  
• Mac updates may take longer to arrive

Other than that the experience remains the same.

About the boss:
Now the spheres do not spawn in random locations anymore. The spheres at the bottom will spawn where the lasers spawn (and the others will be on top). This gives you enough space to stand in the middle and figure out which way the laser will rotate.