Jan Rupnik

If an object that is not a valid JSON is set to a record's field (type json), the exception that we get is only that "error serializing json to string"...

Record frequency gets lost when testing record fq range filter. See the skipped **Record fq range filter** test in `./test/nodejs/streamaggrFilter.js`.

Deserialization bug for t-digest

1

``` var d = require('datalib-sketch'); var t = new d.TDigest(100); t.add(10); t.add(20); t.add(30); console.log(t.quantile(0.5)); // outputs 20 var t2 = d.TDigest.import(t.export()); console.log(t2.quantile(0.5)); // outputs Infinity ```