Dual Balanced Ternary Arithmetic

Migrated from https://github.com/dual-balanced-ternary/dual-balanced-ternary.nim

Usages

```rs use dualbalancedternary::{ternary};

ternary("&1.1") ```

Development

bash cargo test cargo run --example buffer

Notice, current buffer format is not compact, but conceptually:

text [magic 3]+[integral length]+[integral pairs]+[fractional pairs]

since a dbt digits pair takes 81 and u8 takes 256, 2/3 of spaces are wasted.

License

MIT