Allow creatures to make their way to a nearby shadow-casting tree (if there is one) to sleep, taking advantage of the shelter it provides.

Reduce how rapidly growth cost scales with creature size and complexity.

Prevent attacked creatures from continuing to try to seek food/breed/etc during the fight.

Added an oxygen bar to the selected creature UI. Not sold on it. I'm going to need to redesign the UI at some point: I have a bunch of idea's on that front.

Encourage creatures who begin a meal to finish it. [Berates random P. specium for being picky]

Prevent predators from fleeing from the spoils of victory due to fear accumulated during the fight.

Fix pregnancy-induced fatigue loss being applied even when game is paused.

Fix creatures in combat drifting away from the site of combat while the game is paused.

Fix a number of other animation problems related to combat.

Fix a problem with some types of thoughts not being logged.

Fix pregnancy cost being incorrectly represented in mouseover energy bars.

Fix game crashing on startup on Linux.