v2020.1

• Generating .sym and .map files on makefiles
• Integrated romview in the build process
• Several fixes that were causing bank0 to grow up when declaring states/sprites, adding new tiles/maps
• Updated to gbdk 2020 v3.1.1 (banked functions are usable now)
• Improved Frame drawing performance
• Improved sprite/sprite collision performance
• Several other performance fixes
• InitScroll loads tiles automatically, InitScrollTiles is no longer needed
• Added pngb to env package