Initial Vaadin 7 compatibility version for Vaadin 8 projects that want to use NumberField. * [Vaadin 7 version](https://vaadin.com/directory#!addon/numberfield-vaadin-7) * [Original Vaadin 6 version](https://vaadin.com/addon/numberfield) * [Vaadin 8 version](https://vaadin.com/directory#!addon/numberfield-vaadin-8)