rewname enum -> enumeration, add TODO, https://github.com/phetsims/chipper/issues/1106#issuecomment-999113257 https://github.com/phetsims/phet-core/issues/96
rewname enum -> enumeration, add TODO, https://github.com/phetsims/chipper/issues/1106#issuecomment-999113257 https://github.com/phetsims/phet-core/issues/96

phetsims/phet-core,phetsims/phet-core,phetsims/phet-core