Version 0.81 released

Hi all,

A quick update based on feedback we received from playtesting:

• Fixed projectile and poison cloud collisions. They won't collide anymore
• Made camera a little bit more responsive
• Fixed weirdness with dead Zooid ghosts. They won't bug out anymore
• Dead Zooid ghosts won't be affected by UI scale setting
• Made Bone boss spawn 2 enemies instead of 3