Rename: CustomStack to CustomConcurrentStack to avoid names clashing

Author: andrei-punko

src/main/java/by/andd3dfx/multithreading/stack/CustomStack.java renamed to src/main/java/by/andd3dfx/multithreading/stack/CustomConcurrentStack.java

@@ -7,7 +7,7 @@
 /**
  * Implement custom stack with multithreading support without using blocking operations
  */
-public class CustomStack<T> {
+public class CustomConcurrentStack<T> {
 
     private Deque<T> deque = new ArrayDeque<>();
     private ReentrantReadWriteLock lock = new ReentrantReadWriteLock();

src/test/java/by/andd3dfx/multithreading/stack/CustomStackTest.java renamed to src/test/java/by/andd3dfx/multithreading/stack/CustomConcurrentStackTest.java

@@ -8,13 +8,13 @@
 import static org.hamcrest.CoreMatchers.is;
 import static org.hamcrest.MatcherAssert.assertThat;
 
-public class CustomStackTest {
+public class CustomConcurrentStackTest {
 
-    private CustomStack<Integer> stack;
+    private CustomConcurrentStack<Integer> stack;
 
     @Before
     public void setUp() {
-        stack = new CustomStack<>();
+        stack = new CustomConcurrentStack<>();
     }
 
     @Test