Decrease block size to ²⁄₃ m.

This doesn't change much really, apart from the player hitbox.
But I think it feels better.

src/cubyz/world/entity/Entity.java

@@ -41,7 +41,7 @@ public class Entity {
 	/**
 	 * Used as hitbox.
 	 */
-	public double width = 0.25, height = 1.8;
+	public double width = 0.35, height = 2.7;
 
 	/**
 	 * @param type

src/cubyz/world/entity/Player.java

@@ -18,7 +18,7 @@
  */
 
 public class Player extends Entity implements CommandSource {
-	public static final float cameraHeight = 1.7f;
+	public static final float cameraHeight = 2.65f;
 
 
 	private boolean flying = false;

src/cubyz/world/terrain/generators/FractalCaveGenerator.java

@@ -26,8 +26,8 @@ public class FractalCaveGenerator implements Generator {
 	private static final float SPLIT_FACTOR_Y = SPLIT_FACTOR*0.5f; // Slightly reduced to reduce splits in y-direction
 	private static final float MAX_SPLIT_LENGTH = 128;
 	private static final float BRANCH_CHANCE = 0.4f;
-	private static final float MIN_RADIUS = 1.5f;
-	private static final float MAX_INITIAL_RADIUS = 3;
+	private static final float MIN_RADIUS = 2.0f;
+	private static final float MAX_INITIAL_RADIUS = 5;
 	private static final float HEIGHT_VARIANCE = 0.15f;
 	private static final int MAX_CAVE_HEIGHT = 128;
 	private static final int CAVE_HEIGHT_WITH_MAX_DENSITY = -512;