docs: future features

README.md

@@ -3,3 +3,7 @@
 Splix is a command-line tool written in Rust for splitting images into multiple images based on specified rows, columns, or a custom grid. It offers a simple and efficient way to break down images into smaller components, facilitating various image processing tasks.
 
 Disclaimer: first time writing Rust so code might be terrible
+
+Future: 
+- variable row heights and col widths
+- grid of any combination of row heights/widths