Enable mouse wheel in freehand draw mode
Enable mouse wheel in freehand draw mode

Previously, events weren't being propagated if the active draw
interaction had its `freehand` property set to true. This means that
you can't use your mouse wheel to zoom the map in freehand mode.

This change sets the default `pass` value to true and adds additional
logic to determine when it should be set to false (and stop event
propagation).

adube/ol3,ahocevar/ol3,tschaub/ol3,oterral/ol3,geekdenz/openlayers,adube/ol3,geekdenz/openlayers,tschaub/ol3,stweil/openlayers,fredj/ol3,stweil/ol3,gingerik/ol3,gingerik/ol3,fredj/ol3,ahocevar/openlayers,bjornharrtell/ol3,fredj/ol3,geekdenz/ol3,planetlabs/ol3,mzur/ol3,oterral/ol3,geekdenz/ol3,geekdenz/openlayers,stweil/ol3,stweil/ol3,planetlabs/ol3,bjornharrtell/ol3,ahocevar/openlayers,gingerik/ol3,stweil/openlayers,ahocevar/ol3,mzur/ol3,tschaub/ol3,fredj/ol3,ahocevar/ol3,ahocevar/ol3,geekdenz/ol3,openlayers/openlayers,bjornharrtell/ol3,oterral/ol3,ahocevar/openlayers,stweil/ol3,geekdenz/ol3,gingerik/ol3,adube/ol3,tschaub/ol3,mzur/ol3,planetlabs/ol3,openlayers/openlayers,planetlabs/ol3,openlayers/openlayers,mzur/ol3,stweil/openlayers