Jinsi

- fixed `::select` for lists and tuples
- added `::integer`, `::float` conversions
- added `::strip`
- `::select` optionally can extract ranges now
- added `head`, `tail`, `last`, `init`, `flatten`, and `deepflatten`

- substitutions can now select paths (`<<$select.some.path>>`)

- Use `dezimal` 0.4.0
- Add `util.load_all`

- Fix a bug in `rtreat` for converting number (new `numtype` option in `load_*`)

- compatibility with Python ≥ 3.7, pypy-3.7
- upped dependency on `dezimal`