Add v7.8.8 to CHANGELOG.md [skip ci]
Add v7.8.8 to CHANGELOG.md [skip ci]

babel/babel,kaicataldo/babel,babel/babel,jridgewell/babel,hzoo/babel,jridgewell/babel,kaicataldo/babel,babel/babel,babel/babel,kaicataldo/babel,hzoo/babel,jridgewell/babel,kaicataldo/babel,jridgewell/babel,hzoo/babel,hzoo/babel