Features
- Added `wrap_option_on`, `wrap_option_await_on`, `wrap_result_on` and `wrap_result_await_on`.
Changes
- `wrap_option`, `wrap_option_await`, `wrap_result` and `wrap_result_await` are no longer
subscriptable: their `wrap_on` counterparts should be used to specify error types to handle.
- `reawaitable` was renamed to `wrap_reawaitable` for consistency.