Switch to submodules, support multiple patterns, add options dialog, add license and initial readme

WindowPatterns.cs

@@ -0,0 +1,47 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.ObjectModel;
+using WorkIndicator.Properties;
+
+namespace WorkIndicator
+{
+    public class WindowPatterns : ObservableCollection<WindowPattern>
+    {
+        public static event EventHandler Changed;
+
+        public static WindowPatterns Load()
+        {
+            var windowPatterns = Load(Settings.Default.WindowPatterns);
+
+            return windowPatterns;
+        }
+
+        private static WindowPatterns Load(string serializedData)
+        {
+            var windowPatterns = JsonConvert.DeserializeObject<WindowPatterns>(serializedData) ?? new WindowPatterns();
+
+            return windowPatterns;
+        }
+
+        public void Save()
+        {
+            Settings.Default.WindowPatterns = Serialize();
+
+            Settings.Default.Save();
+
+            Changed?.Invoke(this, null);
+        }
+
+        private string Serialize()
+        {
+            return JsonConvert.SerializeObject(this);
+        }
+
+        public WindowPatterns Clone()
+        {
+            var data = Serialize();
+
+            return Load(data);
+        }
+    }
+}