Update CHANGELOG for v2.1.0 release [skip ci]
Update CHANGELOG for v2.1.0 release [skip ci]

gozer/nubis-base,tinnightcap/nubis-base,limed/nubis-base,tinnightcap/nubis-base,gozer/nubis-base,Nubisproject/nubis-base,tinnightcap/nubis-base,Nubisproject/nubis-base,limed/nubis-base,limed/nubis-base,gozer/nubis-base