Some readme elaboration, but mostly cons

src/stl.rs

@@ -31,13 +31,13 @@ pub mod strings;
 /// any kind of further configuration data into a symtable
 pub fn static_stdlib(syms: &mut SymTable) -> Result<(), String> {
     syms.insert(
-        "append".to_string(),
+        "cons".to_string(),
         Symbol {
-            name: String::from("append"),
+            name: String::from("cons"),
             args: Args::Infinite,
             conditional_branches: false,
-            docs: append::APPEND_DOCSTRING.to_string(),
-            value: ValueType::Internal(Rc::new(append::append_callback)),
+            docs: append::CONS_DOCSTRING.to_string(),
+            value: ValueType::Internal(Rc::new(append::cons_callback)),
         },
     );
 

src/stl/append.rs

@@ -17,10 +17,10 @@
 use crate::segment::{Ctr, Seg};
 use crate::sym::SymTable;
 
-pub const APPEND_DOCSTRING: &str = "traverses any number of arguments collecting them into a list.
+pub const CONS_DOCSTRING: &str = "traverses any number of arguments collecting them into a list.
 If the first argument is a list, all other arguments are added sequentially to the end of the list contained in the first argument.";
 
-pub fn append_callback(ast: &Seg, _syms: &mut SymTable) -> Result<Ctr, String> {
+pub fn cons_callback(ast: &Seg, _syms: &mut SymTable) -> Result<Ctr, String> {
     if let Ctr::Seg(ref s) = *ast.car {
         let mut temp = s.clone();
         if let Ctr::Seg(ref list) = *ast.cdr {