Arrays in JSON literals are limited to 16 values

[lemonad]

While let json_value mnist = {"one": [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]} works fine, let json_value mnist = {"one": [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]} causes the error message Max 16 arguments to function.

[marcusz]

The same problem happens with vector and dictionary constructor expressions. Will need a better way to handle those.