release: bump version to 12.1.1 w/ changelog
release: bump version to 12.1.1 w/ changelog

mmalerba/material2,josephperrott/material2,angular/components,josephperrott/material2,mmalerba/material2,angular/components,crisbeto/material2,josephperrott/material2,crisbeto/material2,angular/components,crisbeto/material2,mmalerba/material2,mmalerba/material2,mmalerba/material2,josephperrott/material2,crisbeto/material2,angular/components,josephperrott/material2