BUG: all NaN output arrays in circmean
BUG: all NaN output arrays in circmean

Fixed bug that output a single NaN when an array was expected in circmean.

perimosocordiae/scipy,vigna/scipy,jamestwebber/scipy,Stefan-Endres/scipy,grlee77/scipy,ilayn/scipy,ilayn/scipy,endolith/scipy,arokem/scipy,person142/scipy,zerothi/scipy,aeklant/scipy,perimosocordiae/scipy,zerothi/scipy,andyfaff/scipy,andyfaff/scipy,vigna/scipy,Stefan-Endres/scipy,zerothi/scipy,anntzer/scipy,nmayorov/scipy,andyfaff/scipy,scipy/scipy,endolith/scipy,vigna/scipy,anntzer/scipy,ilayn/scipy,Eric89GXL/scipy,endolith/scipy,andyfaff/scipy,mdhaber/scipy,grlee77/scipy,mdhaber/scipy,ilayn/scipy,rgommers/scipy,pizzathief/scipy,WarrenWeckesser/scipy,grlee77/scipy,e-q/scipy,matthew-brett/scipy,anntzer/scipy,rgommers/scipy,scipy/scipy,jamestwebber/scipy,pizzathief/scipy,WarrenWeckesser/scipy,person142/scipy,aeklant/scipy,tylerjereddy/scipy,scipy/scipy,tylerjereddy/scipy,tylerjereddy/scipy,pizzathief/scipy,andyfaff/scipy,pizzathief/scipy,perimosocordiae/scipy,person142/scipy,arokem/scipy,e-q/scipy,nmayorov/scipy,vigna/scipy,matthew-brett/scipy,nmayorov/scipy,nmayorov/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,aeklant/scipy,perimosocordiae/scipy,scipy/scipy,andyfaff/scipy,scipy/scipy,anntzer/scipy,arokem/scipy,grlee77/scipy,vigna/scipy,ilayn/scipy,nmayorov/scipy,Stefan-Endres/scipy,Eric89GXL/scipy,mdhaber/scipy,aeklant/scipy,tylerjereddy/scipy,anntzer/scipy,matthew-brett/scipy,endolith/scipy,pizzathief/scipy,e-q/scipy,WarrenWeckesser/scipy,mdhaber/scipy,e-q/scipy,mdhaber/scipy,Stefan-Endres/scipy,jamestwebber/scipy,scipy/scipy,mdhaber/scipy,zerothi/scipy,anntzer/scipy,arokem/scipy,tylerjereddy/scipy,rgommers/scipy,matthew-brett/scipy,arokem/scipy,e-q/scipy,endolith/scipy,endolith/scipy,Eric89GXL/scipy,rgommers/scipy,matthew-brett/scipy,ilayn/scipy,Stefan-Endres/scipy,person142/scipy,jamestwebber/scipy,jamestwebber/scipy,person142/scipy,zerothi/scipy,WarrenWeckesser/scipy,WarrenWeckesser/scipy,aeklant/scipy,perimosocordiae/scipy,zerothi/scipy,grlee77/scipy,Eric89GXL/scipy,rgommers/scipy,Eric89GXL/scipy,Eric89GXL/scipy