Parsed BigDecimal is not limited for a scale value and has an UNLIMITED math context that is unsafe for open systems

[plokhotnyuk]

The code bellow can grab CPU core for several minutes and then will throw an out of memory error:

JsonStringInput.read[BigDecimal]("\"1e2000000000\"") + 1

More details: scala/bug#10882

[ghik]

Fixed as part of #66 in #74, JsonStringInput uses BigDecimal.defaultMathContext (DECIMAL128) which can be adjusted using JsonOptions.