code_review: PR #1492

- Remove all synchronous method in commands
- `Command.ReadToEndAsync` now is protected method
- Rename `ResultAsync` to `GetResultAsync`
- Call `ConfigureAwait(false)` when there's no context

Signed-off-by: leo <longshuang@msn.cn>

src/ViewModels/UpdateSubmodules.cs

@@ -65,10 +65,11 @@ namespace SourceGit.ViewModels
 
             await new Commands.Submodule(_repo.FullPath)
                 .Use(log)
-                .UpdateAsync(targets, EnableInit, EnableRecursive, EnableRemote);
+                .UpdateAsync(targets, EnableInit, EnableRecursive, EnableRemote)
+                .ConfigureAwait(false);
 
             log.Complete();
-            await CallUIThreadAsync(() => _repo.SetWatcherEnabled(true));
+            _repo.SetWatcherEnabled(true);
             return true;
         }