is_alive, is_empty -> alive, empty

develop/fuzzing/batch_destroy_fuzz.lua

@@ -108,7 +108,7 @@ for chunk in evo.execute(all_chunk_query) do
 end
 
 for _, destroyed_entity in ipairs(should_be_destroyed_entity_list) do
-    assert(not evo.is_alive(destroyed_entity))
+    assert(not evo.alive(destroyed_entity))
 end
 
 ---

develop/fuzzing/destroy_fuzz.lua

@@ -110,11 +110,11 @@ for chunk in evo.execute(all_chunk_query) do
 end
 
 for _, destroying_entity in ipairs(destroying_entity_list) do
-    assert(not evo.is_alive(destroying_entity))
+    assert(not evo.alive(destroying_entity))
 end
 
 for _, destroyed_entity in ipairs(should_be_destroyed_entity_list) do
-    assert(not evo.is_alive(destroyed_entity))
+    assert(not evo.alive(destroyed_entity))
 end
 
 ---