Refactors commit quick pick commands

Splits showQuickCommitDetails into showQuickCommitDetails and showQuickCommitFileDetails
Adds closeUnchangedFiles command
Adds openChangedFiles command
Adds diffDirectory command
Adds contextual description to the `go back` commands
Fixes #44 by adding a warning message about Git version requirements
Fixes intermittent errors when adding active line annotations
Fixes intermittent errors when opening multiple files via quick picks
Updates dependencies
Preps v2.11.0

src/commands/diffDirectory.ts

@@ -0,0 +1,35 @@
+'use strict';
+import { TextEditor, Uri, window } from 'vscode';
+import { ActiveEditorCommand, Commands } from './commands';
+import { GitProvider } from '../gitProvider';
+import { Logger } from '../logger';
+
+export class DiffDirectoryCommand extends ActiveEditorCommand {
+
+    constructor(private git: GitProvider, public repoPath: string) {
+        super(Commands.DiffDirectory);
+    }
+
+    async execute(editor: TextEditor, uri?: Uri, shaOrBranch1?: string, shaOrBranch2?: string): Promise<any> {
+        if (!(uri instanceof Uri)) {
+            uri = editor && editor.document && editor.document.uri;
+        }
+
+        try {
+            const repoPath = await this.git.getRepoPathFromUri(uri, this.repoPath);
+            if (!repoPath) return window.showWarningMessage(`Unable to open directory diff`);
+
+            if (!shaOrBranch1) {
+                //window.showQuickPick()
+                return undefined;
+            }
+
+            this.git.openDirectoryDiff(repoPath, shaOrBranch1, shaOrBranch2);
+            return undefined;
+        }
+        catch (ex) {
+            Logger.error('GitLens.DiffDirectoryCommand', ex);
+            return window.showErrorMessage(`Unable to open directory diff. See output channel for more details`);
+        }
+    }
+}