[Pharo-users] STON shouldn't care about shared references in JSON mode

Hi, I don't think this should throw an error when I am producing JSON. ``` d := { 'a' -> #(). 'b' -> #(). } asDictionary. STON toJsonString: d. ``` dtto this ``` a := {'hm'}. d := { 'a' -> a. 'b' -> a. } asDictionary. STON toJsonString: d. ``` Maybe I should forgo using STON>>toJson* out of laziness (it is preinstalled) and always go for NeoJSON? Peter