cKDTree benchmarks added: balanced/unbalanced tree
cKDTree benchmarks added: balanced/unbalanced tree

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