Changes shortcut keys for diff with previous commands

Adds diff with next command
Fixes #45 - Keyboard Shortcut collision with Project Manager
Preps v2.11.2

src/commands/diffWithPrevious.ts

@@ -64,6 +64,7 @@ export class DiffWithPreviousCommand extends ActiveEditorCommand {
                 this.git.getVersionedFile(commit.previousUri.fsPath, commit.repoPath, commit.previousSha)
             ]);
             await commands.executeCommand(BuiltInCommands.Diff, Uri.file(lhs), Uri.file(rhs), `${path.basename(commit.previousUri.fsPath)} (${commit.previousSha}) ↔ ${path.basename(commit.uri.fsPath)} (${commit.sha})`);
+            // TODO: Figure out how to focus the left pane
             return await commands.executeCommand(BuiltInCommands.RevealLine, { lineNumber: line, at: 'center' });
         }
         catch (ex) {