Wings 3d 2.1.7

[dgud]

New release with some fixes and improvements.

I have another one in the pipe with new materials and lighting but we release
this one first.

--- 2.1.7 --------------------------------------------

- Improved importer, now it can more often create "objects" instead
of separated faces when importing models. [dgud]

- Implemented importer and exporter for
GL transfer format (*.gltf|*.glb). [dgud]

- Fixed View/Show/Filter Textures
Option previously only worked after restarting wings, thanks OXO. [dgud]

- Added support for (some) .dds image files. [dgud]

- Fixed (some) keyboard focus bugs [dgud]

- Added more texture types (currently not used) [micheus, dgud]

- Fixed autosave, and other minor bugs. [micheus, dgud]