- Updated `todo.md` to include detailed implementation steps for the sieve engine and combinatorial algorithms, aligning with the primesieve and primecount references.
- Enhanced documentation across various modules, including `pi`, `combinatorics`, and `primes`, to clarify function purposes and provide usage examples.
- Removed the deprecated `segmented_sieve.rs` file and reorganized the `primes` module to streamline the codebase.
- Improved error handling in the `error.rs` file, adding more descriptive error messages for better debugging.
- Added examples and references for unimplemented functions to guide future development.
Myeongseon Choi
cedf648a15