bump to 0.5.1
bump to 0.5.1

KeyproOy/OWSLib,geographika/OWSLib,b-cube/OWSLib,daf/OWSLib,mbertrand/OWSLib,daf/OWSLib,QuLogic/OWSLib,dblodgett-usgs/OWSLib,geopython/OWSLib,kalxas/OWSLib,kwilcox/OWSLib,datagovuk/OWSLib,jaygoldfinch/OWSLib,datagovuk/OWSLib,bird-house/OWSLib,ocefpaf/OWSLib,tomkralidis/OWSLib,JuergenWeichand/OWSLib,robmcmullen/OWSLib,Jenselme/OWSLib,datagovuk/OWSLib,jaygoldfinch/OWSLib,jachym/OWSLib,daf/OWSLib,gfusca/OWSLib,menegon/OWSLib