1.0.2

Breaking

• None.

Enhancements

• Update LibYAML sources to latest versions as of January 6 2018.
  JP Simard

Bug Fixes

• Fix some test failures with the latest Swift 5 snapshot on Apple platforms.
  Norio Nomura
  #143

• Preserve nanoseconds in dates when using swift-corelibs-foundation with
  Swift 5.
  Norio Nomura
  #146

• Fix null/~/NULL/Null were parsed as strings, not nil by YAMLDecoder.
  Norio Nomura
  #157