A rust crate for CROND parser library.
Returns an iterator that retrieve the calculation of the corresponding date and time from a CROND format string.
```rust
let dt: DateTime
let itr: CronIntervalIterator
let dt_vec: Vec
// 2021-01-01T02:00:00Z // 2021-01-01T02:30:00Z // 2021-01-01T04:00:00Z // 2021-01-01T04:30:00Z // 2021-01-01T06:00:00Z ```