4.2.0

• Implemented single instance
  • Opening multiple VTFs at once will instead open in a singular VTFEdit instance as tabs
  • This behavior can be toggled under "Options"
• Added Hotspot editor for materials with hotspot data/.rect files
  • See https://developer.valvesoftware.com/wiki/Hotspot_texturing for details
  • Can be accessed under "Texture" tab
• Added EXR/PFM/HDR import and export support
  • This now allows creating RGBA16161616, RGBA16161616F, RGBA32323232F and R32 VTFs
• Added ability to change VTF version of existing textures
• Added sprite sheet animation preview
• Added BC7 to Color Format list
• Added recognition for PCC (Parallax Cubemap) VTF resource
• Significantly improved viewport performance on large, compressed images
• Moved "Strip alpha channel" import option to General tab
• Moved sprite sheet editor to "Texture" tab
• Swapped BC4/BC5 enum order
• Fixed issue where all system fonts were scanned on startup
• Fixed being able to drag and drop unsupported file types
• Only supported file types are now shown in import dialog
• The location where files were opened last is now remembered