Small UI and code improvements

src/DesktopMagicPluginAPI/Inputs/CheckBox.cs

@@ -1,10 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DesktopMagicPluginAPI.Inputs
+namespace DesktopMagicPluginAPI.Inputs
 {
     public class CheckBox : Element
     {

src/DesktopMagicPluginAPI/Inputs/Element.cs

@@ -1,8 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace DesktopMagicPluginAPI.Inputs
 {

src/DesktopMagicPluginAPI/Inputs/ElementAttribute.cs

@@ -1,8 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace DesktopMagicPluginAPI.Inputs
 {

src/DesktopMagicPluginAPI/Inputs/Heading.cs

@@ -1,14 +1,21 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DesktopMagicPluginAPI.Inputs
+namespace DesktopMagicPluginAPI.Inputs
 {
     public class Heading : Element
     {
-        public string Value { get; }
+        private string _value;
+
+        public string Value
+        {
+            get => _value;
+            set
+            {
+                if (_value != value)
+                {
+                    _value = value;
+                    ValueChanged();
+                }
+            }
+        }
 
         public Heading(string value)
         {

src/DesktopMagicPluginAPI/Inputs/IntegerUpDown.cs

@@ -1,8 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace DesktopMagicPluginAPI.Inputs
 {

src/DesktopMagicPluginAPI/Inputs/Slider.cs

@@ -1,8 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace DesktopMagicPluginAPI.Inputs
 {

src/DesktopMagicPluginAPI/Inputs/TextBox.cs

@@ -1,10 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DesktopMagicPluginAPI.Inputs
+namespace DesktopMagicPluginAPI.Inputs
 {
     public class TextBox : Element
     {