chore: release v0.20.0 (#109)

## 🤖 New release

* `pmtiles`: 0.19.2 -> 0.20.0 (⚠ API breaking changes)

### ⚠ `pmtiles` breaking changes

```text
--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/enum_variant_added.ron

Failed in:
  variant PmtError:InvalidTileId in /tmp/.tmpxfPXJO/pmtiles-rs/src/error.rs:93
```

<details><summary><i><b>Changelog</b></i></summary><p>

<blockquote>

##
[0.20.0](v0.19.2...v0.20.0)
- 2026-02-20

### Other

- Make header methods publicly readable
([#110](#110))
- Return Result from TileId::new instead of Option
([#107](#107))
</blockquote>


</p></details>

---
This PR was generated with
[release-plz](https://github.com/release-plz/release-plz/).

Author: lseelenbinder

CHANGELOG.md

@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.20.0](https://github.com/stadiamaps/pmtiles-rs/compare/v0.19.2...v0.20.0) - 2026-02-20
+
+### Other
+
+- Make header methods publicly readable ([#110](https://github.com/stadiamaps/pmtiles-rs/pull/110))
+- Return Result from TileId::new instead of Option ([#107](https://github.com/stadiamaps/pmtiles-rs/pull/107))
+
 ## [0.19.2](https://github.com/stadiamaps/pmtiles-rs/compare/v0.19.1...v0.19.2) - 2026-01-29
 
 ### Other

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pmtiles"
-version = "0.19.2"
+version = "0.20.0"
 edition = "2024"
 authors = ["Luke Seelenbinder <luke.seelenbinder@stadiamaps.com>", "Yuri Astrakhan <YuriAstrakhan@gmail.com>"]
 license = "MIT OR Apache-2.0"