Dynamic Installer Requirements - `<dynamicinstallerrequirements>`

Introduced in IzPack 5.0, the <dynamicinstallerrequirements> element is used to enhance the "classic" installer requirement checking that IzPack does at the beginning of an installation process. This stops the installation unless a certain condition is met. With the dynamicinstallerrequirements element, you can check a certain set of conditions on each panel change.