ropensci/stplanr: Generic Oneway Trip

stplanr 0.1.6 NEW FEATURES onewayid() is now a generic function, meaning it can handle spatial and non-spatial data New arguments provided for line2route() allow you to specify variables to join-by - also has updated and more sensible defaults New function od_id_order() to put origin-destination ids in order, to identify 2 way duplicates (split out from onewayid()) BUG FIXES See the issue tracker Bug in route_cyclestreet() leading change_elev and av_incline being wrong now fixed Bug making variable names with spaces in the id columns failed - now fixed #13