---
area: "Changes"
parent: "Changes"
url: "https://unpoly.com/changes/0.19.0"
released: "2016-02-21"
---
<nav aria-label="Unpoly docs">[All docs](https://unpoly.com/index.md) · [Changes](https://unpoly.com/changes.md)</nav>

# Version 0.19.0

Released on February 21, 2016 with [5 commits](https://github.com/unpoly/unpoly/commits/v0.19.0)

## Compatible changes {#compatible-changes}

- Elements can now be persisted during page updates using the [`up-keep`](https://unpoly.com/api/up-keep.md) attribute.
- `up.proxy.ajax()` is now available as [`up.ajax()`](https://unpoly.com/api/up.ajax.md).
- [`up.ajax()`](https://unpoly.com/api/up.ajax.md) can now handle nested objects as `{ data }` option (used to pass form parameters).

## Breaking changes {#breaking-changes}

- 🧩 `up.implant()` has been renamed to [`up.extract()`](https://unpoly.com/api/up.extract.md).