v4.0.0rc

Update to Qt5. UVF files made with IV3D v3 or older will not work with this version

Happy Meshes

Improved mesh handling support:

• We do not destroy UVFs anymore when deleting meshes.
• Mesh colors are properly displayed and written to UVFs.
• All meshes can be transformed at once.
• Improved export to IV3Dm. Data gets zipped for you.