Sparks1998

Update Parser.php

1

I just fixed a bug

Added a function that might be useful for the users to clear database environment variables from $_ENV global variable

Please pull [this fork](https://github.com/adaptolearning/open_file) since it has a good fix for ffi problem

Fix get current location in path_provider.dart

Just found a type error in the latest update so I fixed it and fully migrated the plugin to dart 2.