Seeking mah jongg players -- or learners! -- to play regularly in Cambridge/Somerville, and possibly elsewhere.  We have offered weekly and one-off games in Cambridge, Somerville, Medford and Coolidge Corner, as well as beginners classes. All members are invited to suggest and post a new game day/time/location! There is no fee to join our group, and you are welcome to come once to make sure it suits you.  After that, we ask a contribution of $5 from each player which covers 6 months (August 16 t …