Added more POJO observable variations (https://github.com/edvin/tornadofx/issues/104)
Added more POJO observable variations (https://github.com/edvin/tornadofx/issues/104)

edvin/tornadofx,nimakro/tornadofx,edvin/tornadofx,nimakro/tornadofx,genobis/tornadofx,genobis/tornadofx