Update README

README.md

@@ -8,6 +8,10 @@ Features of this interpreter:
 * Somewhat organised and readable codebase
 * Not super buggy (yet)
 * Uses standard, portable C*
+* Actually speedy (typically 3-5x faster than Python, similar results to C)
+* 95% more memory efficient than original Ground
+* Up to 5x faster than original Ground
+* 90% smaller binary than original Ground
 
 Now that Ground's features have mostly been finalised, this interpreter can be built with care to many features not initially planned, like functions and data structures
 
@@ -36,5 +40,12 @@ Progress marker:
     - [x] Comparisions
     - [ ] Type conversions
     - [ ] Functions
+        - [x] Define functions
+        - [x] Call functions
+        - [ ] Return values (type checked)
+        - [ ] Arguments for functions
+        - [ ] Jumping within functions
     - [ ] Custom data structures
     - [ ] Working with external libraries
+
+