Bernie doesn't transform at 0 sanity in lunacy without Bearly Sane

This is because without any Bearly Sane skills, the check for Bernie to transform only returns true if Willow is insane, which cannot happen while lunacy is active. As soon as you have any Bearly Sane skills, the check returns true if your sanity is below a certain value, which can happen regardless of whether lunacy is active or not.

Simple fix for this:
in bernie_common.lua, replace the line:

if ( leader.components.sanity:IsCrazy() or
with
if ( leader.components.sanity:GetPercent() <= TUNING.SANITY_BECOME_INSANE_THRESH or