uuuidv7

# Changelog

## 0.3.0

### Added

  * `UUIDv7.bingenerate_many/1` and `UUIDv7.generate_many/1` — bulk
    generation of strictly-ordered UUIDv7 batches. Single
    `:crypto.strong_rand_bytes/1` call per batch; up to ~30× faster
    than calling `bingenerate/0` in a loop. The 12-bit sub-millisecond
    field is partitioned into `n` slots with crypto-strong jitter
    inside each slot. Batches of `n > 4096` auto-chunk across
    consecutive milliseconds.
  * `UUID` — a boxed-binary struct wrapping the raw 16 bytes of a UUID.
    Version-agnostic. Implements `String.Chars`, `Inspect` (renders as
    `UUID.new("...")` so the inspected form is valid Elixir without
    needing an import), `JSON.Encoder` (Elixir 1.18+ built-in `JSON`),
    and `Jason.Encoder` (auto-detected if `:jason` is in your deps).
  * `UUIDv7.Boxed` — Ecto type that autogenerates `%UUID{}` values and
    dumps the raw bytes directly to Postgres, skipping the
    `hex → binary` round-trip that `Ecto.UUID` performs on every
    insert. ~1.43× faster and ~24% less memory per row vs the hex
    string path.
  * `UUIDv7.Boxed.generate_many/1` — bulk variant returning `[%UUID{}]`.
  * `UUIDv7.min_uuid/1` now accepts a `Date` (midnight UTC of that day)
    in addition to `DateTime`.
  * `UUIDv7.to_datetime/1` and `UUIDv7.to_date/1` — extract a UTC
    `DateTime` (millisecond precision) or `Date` from a UUIDv7 hex
    string or raw 16-byte binary.

### Changed

  * Minimum Elixir version bumped to 1.18 (for built-in `JSON` module).

## 0.2.0

  * `UUIDv7.generate_from_datetime/1`, `bingenerate_from_datetime/1`
  * `UUIDv7.min_uuid/1` for half-closed time-range queries