hyunghwan.chung 63519c1ca3 introduced a new class modifier #immutable to indicate that an instantiated object cannot be modified using basicAt:put:		2017-05-07 05:18:21 +00:00
moo	introduced a new class modifier #immutable to indicate that an instantiated object cannot be modified using basicAt:put:	2017-05-07 05:18:21 +00:00