Make sure fall damage stuff is processed on the server only, and reactivate the config option by default

src/main/java/electroblob/wizardry/Settings.java

@@ -170,7 +170,7 @@ public final class Settings {
 	public boolean legacyWandLevelling = false;
 	/** <b>[Server-only]</b> Whether to replace Minecraft's distance-based fall damage calculation with an equivalent,
 	 * velocity-based one. */
-	public boolean replaceVanillaFallDamage = false;
+	public boolean replaceVanillaFallDamage = true;
 	/** <b>[Server-only]</b> Whether using bonemeal on grass blocks has a chance to grow crystal flowers. */
 	public boolean bonemealGrowsCrystalFlowers = true;
 	/**

src/main/java/electroblob/wizardry/WizardryEventHandler.java

@@ -420,7 +420,7 @@ public final class WizardryEventHandler {
 	@SubscribeEvent // Priority doesn't matter here, we're only setting event fields so if it's cancelled it won't matter
 	public static void onLivingFallEvent(LivingFallEvent event){
 		// Why is fall damage based on distance fallen? Why? Who on earth came up with that? It makes no sense whatsoever!
-		if(Wizardry.settings.replaceVanillaFallDamage && !Loader.isModLoaded("speedbasedfalldamage")){
+		if(!event.getEntity().world.isRemote && Wizardry.settings.replaceVanillaFallDamage && !Loader.isModLoaded("speedbasedfalldamage")){
 			// We want to keep the fall damage EXACTLY THE SAME for free, uninterrupted falls, but fix the weirdness
 			// caused when something else changes the entity's velocity
 			// All living entities have a gravity of 0.08b/t^2