v 0.2.23 bug fixes and overhaul of day & night cycle

1: Changed the way squirrels behave, to be more focused and less like a murderous mob.

2: Reworked the day/night cycle, time is now a 24:00 system

Small minor improvements, for not only performance, but overall quality.

Squirrels do respawn, I think. I wanted that last night, but not certain I got to add it in.

That's all for 0.2.23 v of Kalvgv II