2.7.0++

• Add sliders and hex input to the palette editor
• Saving warns about files that were modified by another program (like if you edit the map script .asm file in Notepad but also moved an event in Polished Map++)
• Support spaces or tabs for indenting map events, tilecoll, and RGB in .asm/.pal files
• Roof tile editor supports Alt+click to swap hues like tileset editor
• Ruler highlights the cursor position even in Blocks mode
• More tolerant and accurate logic for guessing tilesets from map filenames, and destination filenames from Shift+clicked warp_events
• Default map size prefers multiples of 10x9, the typical grid unit Gen 1/2
• View→Transparent (F10) makes the window transparent
• Default to the Dark theme if Windows 10's color personalization is set to dark
• Save and restore maximized window state in Linux
• Consistently do OK/Cancel on Windows and Cancel/OK on Linux
• Any logic based on file extensions is case-insensitive
• Update FLTK to 1.3.7
• Various UI polishing