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.ts

@@ -11,6 +11,7 @@ export { CopyShaToClipboardCommand } from './commands/copyShaToClipboard';
 export { DiffDirectoryCommand } from './commands/diffDirectory';
 export { DiffLineWithPreviousCommand } from './commands/diffLineWithPrevious';
 export { DiffLineWithWorkingCommand } from './commands/diffLineWithWorking';
+export { DiffWithNextCommand } from './commands/diffWithNext';
 export { DiffWithPreviousCommand } from './commands/diffWithPrevious';
 export { DiffWithWorkingCommand } from './commands/diffWithWorking';
 export { OpenChangedFilesCommand } from './commands/openChangedFiles';