ZstdSharp.Zstd.get_CompressionLevels raises ArgumentOutOfRangeException: ArgumentOutOfRange_NeedNonNegNum

[hu-ak]

Hi,
Zstd.CompressionLevels.Start.Value raises

ArgumentOutOfRangeException: ArgumentOutOfRange_NeedNonNegNum Parameter name: value
  at System.Index.op_Implicit (System.Int32 value) 
  at ZstdSharp.Zstd.get_CompressionLevels ()

The reason is that System.Range uses System.Index for Start and End, so accept only nonNegative values, but ZSTD_minCLevel() returns a negative value.