finished let forms

Signed-off-by: Ava Hahn <ava@aidanis.online>

Readme.org

@@ -20,21 +20,18 @@ https://gitlab.com/whom/shs
 https://matrix.to/#/#vomitorium:matrix.sunnypup.io
 
 * How to use
-** Syntax
-*** Basic data types
-TODO
-*** S-Expressions
-TODO
-**** calling a function
-TODO
-*** Control flow
-TODO
-*** Defining variables and functions
-TODO
-**** Undefining variables and functions
-TODO
-*** Builtin functions
-TODO
+** TODO Syntax
+*** TODO Basic data types
+*** TODO S-Expressions
+**** TODO calling a function
+*** TODO Control flow
+**** TODO if
+**** TODO while
+**** TODO let
+**** TODO circuit
+*** TODO Defining variables and functions
+**** TODO Undefining variables and functions
+*** TODO Builtin functions
 
 ** Configuration
 By default Relish will read from ~/.relishrc for configuration, but the default shell will also accept a filename from the RELISH_CFG_FILE environment variable.
@@ -58,6 +55,8 @@ Errors during configuration are non-terminal. In such a case any defaults which
 - CFG_RELISH_PROMPT (default (echo "λ ")): A *function* definition which is called in order to output the prompt for each loop of the REPL.
   This function will be reloaded each REPL loop and will be called by the interpreter with no arguments.
 
+** TODO Further configuration
+
 ** Compilation 
 #+BEGIN_SRC sh
   cargo build
@@ -128,7 +127,7 @@ This contains any executable target of this project. Notably the main shell file
 Note: this section will not show the status of each item unless you are viewing it with a proper orgmode viewer
 *** TODO Rudimentary Control Flow
 **** DONE if clause
-**** TODO loop clause
+**** TODO let clause
 **** TODO while clause
 **** TODO circuit clause
 *** TODO Help function
@@ -150,13 +149,18 @@ Will need a concatenate function for tables
 **** TODO head (returns (head rest))
 **** TODO tail (returns (rest tail))
 **** TODO queue (append to front)
+**** TODO snippet for dequeue
+**** TODO snippet for pop
 *** TODO boolean operations
-**** TODO and
+**** TODO and (circuit)
 **** TODO or
 **** TODO xor
-**** TODO not
+**** TODO no
+**** TODO eq?
 **** TODO toggle
 *** TODO string operations
+**** TODO contains
+**** TODO len
 **** TODO concat
 **** TODO substr by index
 **** TODO split (on delimiter)
@@ -171,6 +175,9 @@ Will need a concatenate function for tables
 **** TODO inc
 **** TODO dec
 **** TODO int (float to int)
+**** TODO gt?
+**** TODO lt?
+**** TODO snippets for gte and lte
 *** TODO file operations
 **** TODO read-to-string
 **** TODO write-to-file