DOC: Update NumFOCUS subcommittee replacing Nathaniel with Sebastian
DOC: Update NumFOCUS subcommittee replacing Nathaniel with Sebastian

I believe that we pretty much decided on this and @njsmith wished
to not be the NumFOCUS liason, so this suggests to replace me and him
for the subcommittee as well. This is up for discussion, if anyone
else is interested I would be happy to exchange it and if Nathaniel
wants to remain on the subcommittee we can go another route.

endolith/numpy,MSeifert04/numpy,mattip/numpy,charris/numpy,madphysicist/numpy,mhvk/numpy,simongibbons/numpy,mattip/numpy,jorisvandenbossche/numpy,ahaldane/numpy,WarrenWeckesser/numpy,numpy/numpy,MSeifert04/numpy,mhvk/numpy,simongibbons/numpy,pbrod/numpy,madphysicist/numpy,endolith/numpy,madphysicist/numpy,mhvk/numpy,ahaldane/numpy,MSeifert04/numpy,ahaldane/numpy,endolith/numpy,pizzathief/numpy,mhvk/numpy,WarrenWeckesser/numpy,MSeifert04/numpy,grlee77/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,jakirkham/numpy,madphysicist/numpy,pdebuyl/numpy,anntzer/numpy,numpy/numpy,pizzathief/numpy,ahaldane/numpy,anntzer/numpy,rgommers/numpy,simongibbons/numpy,jorisvandenbossche/numpy,pdebuyl/numpy,pizzathief/numpy,simongibbons/numpy,grlee77/numpy,mhvk/numpy,charris/numpy,jorisvandenbossche/numpy,pbrod/numpy,jakirkham/numpy,pbrod/numpy,jorisvandenbossche/numpy,jakirkham/numpy,mattip/numpy,simongibbons/numpy,grlee77/numpy,anntzer/numpy,rgommers/numpy,pdebuyl/numpy,numpy/numpy,grlee77/numpy,seberg/numpy,seberg/numpy,charris/numpy,pizzathief/numpy,abalkin/numpy,abalkin/numpy,rgommers/numpy,mattip/numpy,pbrod/numpy,abalkin/numpy,pdebuyl/numpy,ahaldane/numpy,MSeifert04/numpy,pizzathief/numpy,anntzer/numpy,rgommers/numpy,WarrenWeckesser/numpy,numpy/numpy,endolith/numpy,grlee77/numpy,madphysicist/numpy,jakirkham/numpy,seberg/numpy,WarrenWeckesser/numpy,jakirkham/numpy,pbrod/numpy,seberg/numpy,charris/numpy