o.c.graphene.opiwidgets: starting to work on AxisRange OPI property
o.c.graphene.opiwidgets: adding AxisRangePropertyDescriptor
o.c.graphene.opiwidgets: adding AxisRangeCellEditor
o.c.graphene.opiwidgets: adding AxisRangePropertyDialog
o.c.graphene: BubbleGraph allows setting of AxisRange
o.c.graphene.opiwidgets: BubbleGraph opi widgets allows to set axis range