Prepare release 0.5.20260320 (#115)

* Add changelog for release 0.5.20260320

* Revise changelog and doc version

* Fix extra space

Author: diego-plan9

CHANGELOG.md

@@ -1,3 +1,20 @@
+## [0.5.20260320](https://github.com/Qiskit/ibm-quantum-schemas/tree/0.5.20260320) - 2026-03-20
+
+### Changed
+
+- The public interface has been revised and now conforms to the form:
+
+  ```
+  ibm_quantum_schemas.<program>.version_<x_y>.SomeModel
+  ```
+
+  ([#113](https://github.com/Qiskit/ibm-quantum-schemas/issues/113))
+
+### Added
+
+- `sampler` model version `0.1_dev`
+
+
 ## [0.4.20260309](https://github.com/Qiskit/ibm-quantum-schemas/tree/0.4.20260309) - 2026-03-09
 
 ### Added

changelog.d/113.changed.rst

@@ -29,7 +29,7 @@
 # The short X.Y version
 version = ""
 # The full version, including alpha/beta/rc tags
-release = "0.3.20260226"
+release = "0.5.20260320"
 
 # -- General configuration ---------------------------------------------------