diff --git a/Changelog.md b/Changelog.md
new file mode 100644
index 00000000..857d7dd2
--- /dev/null
+++ b/Changelog.md
@@ -0,0 +1,6 @@
+# Changelog of versions
+
+
+## Version 0.3.0
+- Added: Stack.isEmpty was missing
+- Changed: remove/removeLast/enqueue/enqueueFirst no longer use Type Suffixes
\ No newline at end of file
diff --git a/src/builder/java/speiger/src/builder/GlobalVariables.java b/src/builder/java/speiger/src/builder/GlobalVariables.java
index 63b038b5..68a8a9ad 100644
--- a/src/builder/java/speiger/src/builder/GlobalVariables.java
+++ b/src/builder/java/speiger/src/builder/GlobalVariables.java
@@ -216,8 +216,6 @@ public class GlobalVariables
 		addFunctionValueMappers("COMPUTE_IF_ABSENT", "compute%sIfAbsent");
 		addFunctionValueMappers("COMPUTE_IF_PRESENT", "compute%sIfPresent");
 		addFunctionValueMapper("COMPUTE", "compute");
-		addFunctionMapper("ENQUEUE_FIRST", "enqueueFirst");
-		addFunctionMapper("ENQUEUE", "enqueue");
 		addFunctionMapper("DEQUEUE_LAST", "dequeueLast");
 		addFunctionMapper("DEQUEUE", "dequeue");
 		addFunctionMappers("POLL_FIRST_ENTRY_KEY", "pollFirst%sKey");
diff --git a/src/builder/resources/speiger/assets/collections/templates/queues/ArrayFIFOQueue.template b/src/builder/resources/speiger/assets/collections/templates/queues/ArrayFIFOQueue.template
index 1e179d4b..6d5a491a 100644
--- a/src/builder/resources/speiger/assets/collections/templates/queues/ArrayFIFOQueue.template
+++ b/src/builder/resources/speiger/assets/collections/templates/queues/ArrayFIFOQueue.template
@@ -101,14 +101,14 @@ public class ARRAY_FIFO_QUEUE KEY_GENERIC_TYPE implements PRIORITY_DEQUEUE KEY_G
 	}
 	
 	@Override
-	public void ENQUEUE(KEY_TYPE e) {
+	public void enqueue(KEY_TYPE e) {
 		array[last] = e;
 		last = ++last % array.length;
 		if(last == first) expand();
 	}
 	
 	@Override
-	public void ENQUEUE_FIRST(KEY_TYPE e) {
+	public void enqueueFirst(KEY_TYPE e) {
 		if(first == 0) first = array.length;
 		array[--first] = e;
 		if(first == last) expand();
@@ -145,7 +145,7 @@ public class ARRAY_FIFO_QUEUE KEY_GENERIC_TYPE implements PRIORITY_DEQUEUE KEY_G
 	}
 	
 	@Override
-	public boolean REMOVE(KEY_TYPE e) {
+	public boolean remove(KEY_TYPE e) {
 		if(first == last) return false;
 		for(int i = 0,m=size();i<m;i++) {
 			int index = (first + i) % array.length;
@@ -156,7 +156,7 @@ public class ARRAY_FIFO_QUEUE KEY_GENERIC_TYPE implements PRIORITY_DEQUEUE KEY_G
 	}
 	
 	@Override
-	public boolean REMOVE_LAST(KEY_TYPE e) {
+	public boolean removeLast(KEY_TYPE e) {
 		if(first == last) return false;
 		if(first == last) return false;
 		for(int i = size()-1;i>=0;i--) {
diff --git a/src/builder/resources/speiger/assets/collections/templates/queues/ArrayPriorityQueue.template b/src/builder/resources/speiger/assets/collections/templates/queues/ArrayPriorityQueue.template
index cff6cd04..fea0b135 100644
--- a/src/builder/resources/speiger/assets/collections/templates/queues/ArrayPriorityQueue.template
+++ b/src/builder/resources/speiger/assets/collections/templates/queues/ArrayPriorityQueue.template
@@ -180,7 +180,7 @@ public class ARRAY_PRIORITY_QUEUE KEY_GENERIC_TYPE implements PRIORITY_QUEUE KEY
 	}
 	
 	@Override
-	public void ENQUEUE(KEY_TYPE e) {
+	public void enqueue(KEY_TYPE e) {
 		if(size == array.length) array = Arrays.copyOf(array, size+1);
 		if(firstIndex != -1){
 			int compare = comparator == null ? COMPAREABLE_TO_KEY(e, array[firstIndex]) : comparator.compare(e, array[firstIndex]);
@@ -210,14 +210,14 @@ public class ARRAY_PRIORITY_QUEUE KEY_GENERIC_TYPE implements PRIORITY_QUEUE KEY
 	}
 	
 	@Override
-	public boolean REMOVE(KEY_TYPE e) {
+	public boolean remove(KEY_TYPE e) {
 		for(int i = 0;i<size;i++)
 			if(KEY_EQUALS(e, array[i])) return removeIndex(i);
 		return false;
 	}
 	
 	@Override
-	public boolean REMOVE_LAST(KEY_TYPE e) {
+	public boolean removeLast(KEY_TYPE e) {
 		for(int i = size-1;i>=0;i--)
 			if(KEY_EQUALS(e, array[i])) return removeIndex(i);
 		return false;
diff --git a/src/builder/resources/speiger/assets/collections/templates/queues/HeapPriorityQueue.template b/src/builder/resources/speiger/assets/collections/templates/queues/HeapPriorityQueue.template
index 5d091a04..756076cc 100644
--- a/src/builder/resources/speiger/assets/collections/templates/queues/HeapPriorityQueue.template
+++ b/src/builder/resources/speiger/assets/collections/templates/queues/HeapPriorityQueue.template
@@ -200,7 +200,7 @@ public class HEAP_PRIORITY_QUEUE KEY_GENERIC_TYPE implements PRIORITY_QUEUE KEY_
 	}
 	
 	@Override
-	public void ENQUEUE(KEY_TYPE e) {
+	public void enqueue(KEY_TYPE e) {
 		if(size == array.length) array = Arrays.copyOf(array, size + 1);
 		array[size++] = e;
 		ARRAYS.shiftUp(array, size-1, comparator);
@@ -225,14 +225,14 @@ public class HEAP_PRIORITY_QUEUE KEY_GENERIC_TYPE implements PRIORITY_QUEUE KEY_
 	}
 	
 	@Override
-	public boolean REMOVE(KEY_TYPE e) {
+	public boolean remove(KEY_TYPE e) {
 		for(int i = 0;i<size;i++)
 			if(KEY_EQUALS(e, array[i])) return removeIndex(i);
 		return false;
 	}
 	
 	@Override
-	public boolean REMOVE_LAST(KEY_TYPE e) {
+	public boolean removeLast(KEY_TYPE e) {
 		for(int i = size-1;i>=0;i--)
 			if(KEY_EQUALS(e, array[i])) return removeIndex(i);
 		return false;
diff --git a/src/builder/resources/speiger/assets/collections/templates/queues/PriorityDequeue.template b/src/builder/resources/speiger/assets/collections/templates/queues/PriorityDequeue.template
index c484685d..d6e7cda9 100644
--- a/src/builder/resources/speiger/assets/collections/templates/queues/PriorityDequeue.template
+++ b/src/builder/resources/speiger/assets/collections/templates/queues/PriorityDequeue.template
@@ -10,7 +10,7 @@ public interface PRIORITY_DEQUEUE KEY_GENERIC_TYPE extends PRIORITY_QUEUE KEY_GE
 	 * Method to insert a element into the first Index instead of the last.
 	 * @param e the element that should be inserted into the first place
 	 */
-	public void ENQUEUE_FIRST(KEY_TYPE e);
+	public void enqueueFirst(KEY_TYPE e);
 	/**
 	 * A Method to remove a element from the last place instead of the first
 	 * @return the last element inserted
@@ -29,7 +29,7 @@ public interface PRIORITY_DEQUEUE KEY_GENERIC_TYPE extends PRIORITY_QUEUE KEY_GE
 	 * @param e the boxed element that should be inserted
 	 */
 	@Deprecated
-	public default void enqueueFirst(CLASS_TYPE e) { ENQUEUE_FIRST(OBJ_TO_KEY(e)); }
+	public default void enqueueFirst(CLASS_TYPE e) { enqueueFirst(OBJ_TO_KEY(e)); }
 	/**
 	 * Boxed Method for the dequeue last method
 	 * @return the last element of the Dequeue
diff --git a/src/builder/resources/speiger/assets/collections/templates/queues/PriorityQueue.template b/src/builder/resources/speiger/assets/collections/templates/queues/PriorityQueue.template
index 8ee734e4..48efa45f 100644
--- a/src/builder/resources/speiger/assets/collections/templates/queues/PriorityQueue.template
+++ b/src/builder/resources/speiger/assets/collections/templates/queues/PriorityQueue.template
@@ -38,7 +38,7 @@ public interface PRIORITY_QUEUE KEY_GENERIC_TYPE extends ObjectPriorityQueue<CLA
 	 * Method to insert a element into the PriorityQueue
 	 * @param e the element that should be inserted
 	 */
-	public void ENQUEUE(KEY_TYPE e);
+	public void enqueue(KEY_TYPE e);
 	/**
 	 * Method to extract a element from the PriorityQueue
 	 * @return a element from the Queue
@@ -63,13 +63,13 @@ public interface PRIORITY_QUEUE KEY_GENERIC_TYPE extends ObjectPriorityQueue<CLA
 	 * @param e the element that should be removed
 	 * @return if a searched element was removed
 	 */
-	public boolean REMOVE(KEY_TYPE e);
+	public boolean remove(KEY_TYPE e);
 	/**
 	 * Removes the last found element in the queue
 	 * @param e the element that should be removed
 	 * @return if a searched element was removed
 	 */
-	public boolean REMOVE_LAST(KEY_TYPE e);
+	public boolean removeLast(KEY_TYPE e);
 	
 	/**
 	 * Allows to notify the Queue to be revalidate its data
@@ -97,7 +97,7 @@ public interface PRIORITY_QUEUE KEY_GENERIC_TYPE extends ObjectPriorityQueue<CLA
 	
 #if !TYPE_OBJECT
 	@Deprecated
-	public default void enqueue(CLASS_TYPE e) { ENQUEUE(OBJ_TO_KEY(e)); }
+	public default void enqueue(CLASS_TYPE e) { enqueue(OBJ_TO_KEY(e)); }
 	@Deprecated
 	public default CLASS_TYPE dequeue() { return KEY_TO_OBJ(DEQUEUE()); }
 	
@@ -107,9 +107,9 @@ public interface PRIORITY_QUEUE KEY_GENERIC_TYPE extends ObjectPriorityQueue<CLA
 	public default CLASS_TYPE first() { return peek(0); }
 	
 	@Deprecated
-	public default boolean remove(CLASS_TYPE e) { return REMOVE(OBJ_TO_KEY(e)); }
+	public default boolean remove(CLASS_TYPE e) { return remove(OBJ_TO_KEY(e)); }
 	@Deprecated
-	public default boolean removeLast(CLASS_TYPE e) { return REMOVE_LAST(OBJ_TO_KEY(e)); }
+	public default boolean removeLast(CLASS_TYPE e) { return removeLast(OBJ_TO_KEY(e)); }
 	
 	@Deprecated
 	public default CLASS_TYPE[] toArray() { return toArray(new CLASS_TYPE[size()]); }
diff --git a/src/main/java/speiger/src/collections/utils/Stack.java b/src/main/java/speiger/src/collections/utils/Stack.java
index 367b248e..fa878c9c 100644
--- a/src/main/java/speiger/src/collections/utils/Stack.java
+++ b/src/main/java/speiger/src/collections/utils/Stack.java
@@ -29,6 +29,14 @@ public interface Stack<T>
 	 */
 	public int size();
 	
+	
+	/**
+	 * @return if the stack is empty
+	 */
+	public default boolean isEmpty() {
+		return size() == 0;
+	}
+	
 	/**
 	 * Clears the stack
 	 */
diff --git a/src/test/java/speiger/src/collections/ints/base/BaseIntPriorityQueueTest.java b/src/test/java/speiger/src/collections/ints/base/BaseIntPriorityQueueTest.java
index e0062c45..b3a3b431 100644
--- a/src/test/java/speiger/src/collections/ints/base/BaseIntPriorityQueueTest.java
+++ b/src/test/java/speiger/src/collections/ints/base/BaseIntPriorityQueueTest.java
@@ -26,7 +26,7 @@ public abstract class BaseIntPriorityQueueTest extends BaseIntIterableTest
 		if(getValidPriorityQueueTests().contains(PriorityQueueTest.IN_OUT)) {
 			IntPriorityQueue queue = create(EMPTY_ARRAY);
 			for(int i = 0;i<100;i++) {
-				queue.enqueueInt(i);
+				queue.enqueue(i);
 			}
 			for(int i = 0;i<100;i++) {
 				Assert.assertEquals(i, queue.dequeueInt());
@@ -43,7 +43,7 @@ public abstract class BaseIntPriorityQueueTest extends BaseIntIterableTest
 		if(getValidPriorityQueueTests().contains(PriorityQueueTest.PEEK)) {
 			IntPriorityQueue queue = create(EMPTY_ARRAY);
 			for(int i = 0;i<100;i++) {
-				queue.enqueueInt(i);
+				queue.enqueue(i);
 			}
 			if(isUnsortedRead()) {
 				for(int i = 0;i<100;i++) {
@@ -64,17 +64,17 @@ public abstract class BaseIntPriorityQueueTest extends BaseIntIterableTest
 		if(getValidPriorityQueueTests().contains(PriorityQueueTest.REMOVE)) {
 			IntPriorityQueue queue = create(EMPTY_ARRAY);
 			for(int i = 0;i<100;i++) {
-				queue.enqueueInt(i);
+				queue.enqueue(i);
 			}
-			queue.removeInt(40);
+			queue.remove(40);
 			for(int i = 0;i<99;i++) {
 				if(i >= 40) Assert.assertEquals(i + 1, queue.dequeueInt());
 				else Assert.assertEquals(i, queue.dequeueInt());
 			}
 			for(int i = 0;i<100;i++) {
-				queue.enqueueInt(i);
+				queue.enqueue(i);
 			}
-			queue.removeLastInt(40);
+			queue.removeLast(40);
 			for(int i = 0;i<99;i++) {
 				if(i >= 40) Assert.assertEquals(i + 1, queue.dequeueInt());
 				else Assert.assertEquals(i, queue.dequeueInt());
@@ -89,7 +89,7 @@ public abstract class BaseIntPriorityQueueTest extends BaseIntIterableTest
 			IntPriorityQueue queue = create(EMPTY_ARRAY);
 			if(isUnsortedRead()) {
 				for(int i = 0;i<100;i++) {
-					queue.enqueueInt(i);
+					queue.enqueue(i);
 				}
 				int[] array = queue.toIntArray();
 				IntArrays.stableSort(array);