fluent-syntax 0.6.5 (March 8, 2018)

• Temporarily relax the engines requirement. (#164)

  Include node 6.9.* LTS in the engines requirement to unblock
  mozilla/addons-linter#1789 and thus unblock langpack signing for
  Firefox 60.

  This is a temporary measure until addons-linter phases out the support
  for node 6 which should happen in May 2018.