Version 1.40.1
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- Fixed build-time detection of GTK enablement [#727394]
- Fixed a crash caused by reentrancy in GObject finalizers [#725024]
- Fixed the GIMarshallingTests suite [Lionel Landwerlin, #728004]
- Fixed marshalling of GObjects when known by an interface type
  from C to JS [Lionel Landwerlin, #727824]
- Some typos and JS style cleanups [Mattias Bengtsson, #727781, #727786]