• Fix default name for dplc files, make default extension asm
• Fix broken spritesheet imports

• Puyo Puyo / Dr Robotnik's Mean Bean Machine support
• Full Sonic + Super Sonic S3K support (multiple headers, header labels)
• Multiple art files possible per object (eg S3K Sonic, HUD)
• Combine S3K formats into a single script
• S3K Static and Single Frame formats
• Add MapMacros to S3K formats
• Add MapMacros to Sonic 2 Special Stage format
• Optimize away duplicate mappings or DPLCs with aliased pointers
• Always make current sprite visible in sprite list
• Support uppercase .ASM and .S asm file detection
• Filter by common file extensions in file dialogs

• Strip labels from cloned sprites

• Improve drawing to not miss pixels when dragging
• Each drawn line is treated as a single history item
• Smarter starting location for file dialogs
• Fix OS compatibility issues

• Sonic Crackers Support
• Added Moduled KosinskiPlus compression
• Added ComperX compression
• Added Moduled ComperX compression
• Added Recent Projects menu
• Fixed Sonic 1 MapMacros DPLC bug
• Make MapMacros optional in object config
• Support loading/editing sprite labels for ASM mappings
• Select All persists when navigating between sprites
• Added Settings modal
  • Added choice of palette line to start rendering from
  • Added toggle for using the top left pixel as alpha when importing
  • Added ability to change global UI scale
• Added command to unload everything
• Split raw editor into a new tab
• Added sprite metadata system
• Removed uuids from project files
• Fixed a bug where active tile selection wouldn't show
• Headers pointing to null bytes correctly produce an empty sprite (e.g. S1 Invincibility Stars)

thanks to @Selbi182 for help testing this release!

Full Changelog: 1.3.3...1.4.0

• add support for windows 7 and up

• Fix whitespace in even macro

• Fix support for @label syntax when using AS macros
• Fix a bug with the even macro

• Assembler now uses AS Macro Assembler for full macro support
• MapMacros.asm definitions added for Sonic 1 and 2
• Custom ASM output support added
• Make (de)compression threaded
• Change DPLC limit to 255
• Fix issue where image data would be cached incorrectly
• Fix transparent background colour when importing images over the current sprite

• Added new sprite rotation algorithm: 3 shears
• Fix Sonic 3 Object null sprites