Make IFileSystemWatcher derive from IDisposable (#479)

Fixes #469

Author: BADF00D

System.IO.Abstractions.TestingHelpers.Tests/MockFileSystemTests.cs

@@ -321,7 +321,7 @@ public void MockFileSystem_GetFiles_ThrowsArgumentExceptionForInvalidCharacters(
             const string path = @"c:\";
             var fileSystem = new MockFileSystem();
             fileSystem.AddDirectory(XFS.Path(path));
-            
+
             // Act
             TestDelegate getFilesWithInvalidCharacterInPath = () => fileSystem.Directory.GetFiles($"{path}{'\0'}.txt");
 

System.IO.Abstractions/FileSystemWatcherBase.cs

@@ -6,7 +6,7 @@ namespace System.IO.Abstractions
 {
     /// <inheritdoc cref="FileSystemWatcher"/>
     [Serializable]
-    public abstract class FileSystemWatcherBase : IDisposable, IFileSystemWatcher
+    public abstract class FileSystemWatcherBase : IFileSystemWatcher
     {
         /// <inheritdoc cref="FileSystemWatcher.IncludeSubdirectories"/>
         public abstract bool IncludeSubdirectories { get; set; }

System.IO.Abstractions/IFileSystemWatcher.cs

@@ -4,7 +4,7 @@
 
 namespace System.IO.Abstractions
 {
-    public interface IFileSystemWatcher
+    public interface IFileSystemWatcher : IDisposable
     {
         /// <inheritdoc cref="FileSystemWatcher.IncludeSubdirectories"/>
         bool IncludeSubdirectories { get; set; }

version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://raw.githubusercontent.com/AArnott/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
-  "version": "4.2",
+  "version": "5.0",
   "assemblyVersion": {
     "precision": "major"
   },
@@ -12,4 +12,4 @@
       "enabled": true
     }
   }
-}
+}