`ujson.read` parse unexpected Long value when parsing big number literals

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@ val expected = 1234567890123456789L
expected: Long = 1234567890123456789L

@ val json = ujson.read("""{"a":1234567890123456789}""")
json: ujson.Value.Value = Obj(LinkedHashMap("a" -> Num(1.23456789012345677E18)))

@ json.obj("a").num.toLong == expected
res3: Boolean = false

@ // workaround

@ import upickle.default._
import upickle.default._

@ case class LongValue(a: Long)
defined class LongValue

@ implicit val reader: Reader[LongValue] = macroR
reader: Reader[LongValue] = ammonite.$sess.cmd6$$anon$1@37c49a55

@ upickle.default.read[LongValue]("""{"a":1234567890123456789}""").a == expected
res7: Boolean = true

ID: 278 Original Author: NomadBlacky

amnaredo / test

`ujson.read` parse unexpected Long value when parsing big number literals #257