add issue reference to comment, see https://github.com/phetsims/equality-explorer/issues/25 and https://github.com/phetsims/tandem/issues/48
add issue reference to comment, see https://github.com/phetsims/equality-explorer/issues/25 and https://github.com/phetsims/tandem/issues/48

phetsims/tandem,phetsims/tandem,phetsims/tandem