Update CHANGELOG for v2.0.0 release [skip ci]
Update CHANGELOG for v2.0.0 release [skip ci]

tinnightcap/nubis-ci,gozer/nubis-ci,gozer/nubis-ci,Nubisproject/nubis-ci,tinnightcap/nubis-ci,Nubisproject/nubis-ci