Hi there :)
I'm using this plugin in Australia, and it's great, so thank you for creating it firstly!
There are a few Australian postcodes that also seem to exist in other countries (for example, 2001 is a Sydney postcode but also a Johannesburg postcode). When users type in 2001, they get no results and the map displayed is Johannesburg.
Is there a way to limit the postcode search to be Australian postcodes only?