1.2.1

What's New

• Adds HEIGHT flag to optionally limit timeline height, with vertical scrolling (#61)

```chronos
> HEIGHT 300

- [2025-02-02~2025-03-28] foo 1
- [2025-02-02~2025-03-28] foo 2
- [2025-02-02~2025-03-28] foo 3
- [2025-02-02~2025-03-28] foo 4
- [2025-02-02~2025-03-28] foo 5
- [2025-02-02~2025-03-28] foo 6
- [2025-02-02~2025-03-28] foo 7
- [2025-02-02~2025-03-28] foo 8
- [2025-02-02~2025-03-28] foo 9
```