WA 103

[Bickendan]

Signage for WA 103 begins further north than where we have it in the system.
GMSV shows an END WA 103 shield at the transition from pavement to dirt road just north of Stackpole Slough, right where the trail crosses the road in OSM.

[compdude787]

Finally pull-requested this: https://github.com/TravelMapping/HighwayData/pull/1009