Bow mechanics added, documentation updated.

src/time_system.nvgt

@@ -284,7 +284,7 @@ void attempt_resident_recruitment() {
         return;
     }
 
-    int added = random(1, 3);
+    int added = random(1, 2);
     // Don't exceed cap
     if (residents_count + added > MAX_RESIDENTS) {
         added = MAX_RESIDENTS - residents_count;
@@ -483,8 +483,8 @@ void update_time() {
 
     ensure_ambience_running();
 
-    // Proactive resident defense with slings
-    attempt_resident_sling_defense();
+    // Proactive resident ranged defense
+    attempt_resident_ranged_defense();
 
     // Manage invasion enemies during active invasion
     manage_bandits_during_invasion();