Added a few todo points

README.md

@@ -96,10 +96,84 @@ This is what generates the AST from tokens.
 
 This is what generates expressions from tokens.
 
+## Todo
+
+### Compiler
+
+- [x] Tokenizer
+- [x] Scanner
+- [x] Functions
+- [x] Variables
+- [x] Error messages
+- [x] Expression parser
+- [x] Function calls
+- [x] Parallel compilation
+- [x] Syscalls
+- [x] Variable lifetimes
+- [x] Branches
+- [x] Loops
+- [ ] Data structures
+- [ ] Type system
+- [ ] Type operator: `|` (`User | Error`)
+- [ ] Hexadecimal, octal and binary literals
+- [ ] Error handling
+- [ ] Multiple return values
+- [ ] Threading library
+- [ ] Self-hosted compiler
+
+### Keywords
+
+- [ ] `for`
+- [x] `if`
+- [x] `import`
+- [x] `loop`
+- [x] `return`
+- [ ] `switch`
+
+### Optimizations
+
+- [x] Exclude unused functions
+- [ ] Expression folding
+- [ ] Function call inlining
+- [ ] Loop unrolls
+
+### Linter
+
+- [x] Unused variables
+- [x] Unused parameters
+- [ ] Unused imports
+- [ ] Unnecessary newlines
+- [ ] Ineffective assignments
+
+### Operators
+
+- [x] `=`
+- [x] `+`, `-`, `*`, `/`
+- [x] `+=`, `-=`, `*=`, `/=`
+- [x] `==`, `!=`, `<`, `<=`, `>`, `>=`
+- [x] `&&`, `||`
+- [ ] `%`
+- [ ] `<<`, `>>`
+- [ ] `<<=`, `>>=`
+- [ ] `&`, `|`, `^`
+- [ ] `&=`, `|=`, `^=`
+
+### Architecture
+
+- [ ] arm64
+- [ ] wasm
+- [x] x86-64
+
+### Platform
+
+- [x] Linux
+- [ ] Mac
+- [ ] Windows
+
 ## Tests
 
 ```shell
-go test ./... -v
+go test ./... -v -cover
 ```
 
 ## Benchmarks