fix: export unixify from top level

Author: G-Rath

src/index.js

@@ -1,9 +1,11 @@
 import patchFs from './patchFs';
 import patchRequire from './patchRequire';
+import { unixify } from './correctPath';
 import * as util from './util/list';
 
 export {
     util,
+    unixify,
     patchFs,
     patchRequire,
 };