Merge back the v1.4 branch changes into master (#402)

* UT-617: changelog and version number for fbxsdk

* UT-618: release notes and changelog for FbxExporters

* UT-618: fix for reading the package format

Really we should read it from the package.json

* UT-604: prepare package jsn

* update windows dll to be using FbxSdk 2018

Author: lassond