MAINT: Changed implementation of `from_euler`.
MAINT: Changed implementation of `from_euler`.

Implementation of `from_euler` has been changed according to
suggestions. Standalone functions, where appropriate, have been moved
out of the class.

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