Added Sonoma and Sequoia icons, but the latest version of folderify…

… does not include support for OSX anymore, so I've now separated the two out into parent folders, with the `makefile` now only affecting `macOS` versions.

makefile

@@ -3,14 +3,19 @@
 # ~ Each line is also run in its own shell, so no variables here!
 # ~ DEBUG: remove  '> /dev/null 2>&1' from the end of the folderify call
 define makeIcon
-	@ echo "~ Generating icons for: $(1) ~ $(2) ($(if $(3),$(3),light))..."
+	@ mkdir -p "./icons/macOS/$(1) - $(2)/$(3)"
 
-	@ mkdir -p "./icons/$(1) - $(2)/$(if $(3),$(3),light)"
+	@ folderify ./mask.png --macOS $(1) --color-scheme $(3) > /dev/null 2>&1
 
-	@ folderify ./mask.png --macOS $(1) --color-scheme $(if $(3),$(3),light) > /dev/null 2>&1
+	@ mv "./mask.iconset" "./icons/macOS/$(1) - $(2)/$(3)/icon.iconset"
+	@ mv "./mask.icns" "./icons/macOS/$(1) - $(2)/$(3)/icon.icns"
+endef
+
+define makeIcons
+	@ echo "~ Generating icons for: $(1) ~ $(2)..."
 
-	@ mv "./mask.iconset" "./icons/$(1) - $(2)/$(if $(3),$(3),light)/icon.iconset"
-	@ mv "./mask.icns" "./icons/$(1) - $(2)/$(if $(3),$(3),light)/icon.icns"
+	$(call makeIcon,$(1),$(2),light)
+	$(call makeIcon,$(1),$(2),dark)
 
 	@ echo "~ Icons generated."
 	@ echo ""
@@ -33,66 +38,27 @@ install:
 	@ echo "~ Required dependencies installed!"
 	@ echo ""
 
-# ~~ Clean the generated icon files
+# ~~ Clean the generated macOS icon files
 .PHONY: clean
 clean:
 	@ echo "~ Cleaning existing icons..."
 
-	@ if [ -d ./icons ]; then rm -r ./icons; fi
+	@ if [ -d ./icons/macOS ]; then rm -r ./icons/macOS; fi
 
 	@ echo "~ Icons cleaned!"
 	@ echo ""
 
-# ~~ Generate the icons
+# ~~ Generate the macOS icons
 .PHONY: generate
 generate:
 	@ echo "~ Creating new icons..."
 	@ echo ""
 
-	@ # Mac OS X 10.5 - Leopard
-	$(call makeIcon,10.5,Leopard)
-
-	@ # Mac OS X 10.6 - Snow Leopard
-	$(call makeIcon,10.6,Snow Leopard)
-
-	@ # Mac OS X 10.7 - Lion
-	$(call makeIcon,10.7,Lion)
-
-	@ # OS X 10.8 - Mountain Lion
-	$(call makeIcon,10.8,Mountain Lion)
-
-	@ # OS X 10.9 - Mavericks
-	$(call makeIcon,10.9,Mavericks)
-
-	@ # OS X 10.10 - Yosemite
-	$(call makeIcon,10.10,Yosemite)
-
-	@ # OS X 10.11 - El Capitan
-	$(call makeIcon,10.11,El Capitan)
-
-	@ # macOS 10.12 - Sierra
-	$(call makeIcon,10.12,Sierra)
-
-	@ # macOS 10.13 - High Sierra
-	$(call makeIcon,10.13,High Sierra)
-
-	@ # macOS 10.14 - Mojave
-	$(call makeIcon,10.14,Mojave)
-
-	@ # macOS 10.15 - Catalina
-	$(call makeIcon,10.15,Catalina)
-
-	@ # macOS 11 - Big Sur
-	$(call makeIcon,11.0,Big Sur)
-	$(call makeIcon,11.0,Big Sur,dark)
-
-	@ # macOS 12 - Monterey
-	$(call makeIcon,12.0,Monterey)
-	$(call makeIcon,12.0,Monterey,dark)
-
-	@ # macOS 13 - Ventura
-	$(call makeIcon,13.0,Ventura)
-	$(call makeIcon,13.0,Ventura,dark)
+	$(call makeIcons,11.0,Big Sur)
+	$(call makeIcons,12.0,Monterey)
+	$(call makeIcons,13.0,Ventura)
+	$(call makeIcons,14.0,Sonoma)
+	$(call makeIcons,15.0,Sequoia)
 
 	@ echo "~ New icons created!"
 	@ echo ""
@@ -102,8 +68,8 @@ generate:
 preview:
 	@ echo "~ Creating preview image..."
 
-	$(call icnsToPng,"./icons/10.5 - Leopard/light/icon.icns","./art/preview_old.png")
-	$(call icnsToPng,"./icons/13.0 - Ventura/light/icon.icns","./art/preview_new.png")
+	$(call icnsToPng,"./icons/OSX/10.5 - Leopard/light/icon.icns","./art/preview_old.png")
+	$(call icnsToPng,"./icons/macOS/15.0 - Sequoia/light/icon.icns","./art/preview_new.png")
 
 	@ echo "~ Preview image created!"
 	@ echo ""