Add missing CHANGELOG.md entries for 2.1.0 release
Add missing CHANGELOG.md entries for 2.1.0 release

input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus