Release: Prepare changelog for version 1.3.0

- Added changelog entry for version 1.3.0.
- Documented fixes:
  * Normal computation bug fix in `boundary_normal` for 3D cases.
- Documented new features:
  * API changes in `HyperElasticForm` requiring potential energy arguments.
  * Added new classes for hyperelastic model potential energy.
  * Added `MorphoElasticForm` and `GBVP` for morphoelastic problems.
  * Introduced `CustomDomainGmsh` for loading `.msh` files.
  * Growth laws implemented: `ConstantGrowth`, `TimeDependentGrowth`, etc.
  * Enhanced boundary condition support for scalars, vectors, and tensors.
- Highlighted new tutorials: `pyvista`, `gmsh`, and morphoelastic problems.

Prepared for release 1.3.0.

HISTORY.rst

@@ -6,3 +6,55 @@ creation (2020-08-26)
 ------------------------
 
 * First release on PyPI.
+
+version 1.3.0 (2025-01-11)
+--------------------------
+
+### **Bug Fixes**
+
+- Fixed normal computation in the `boundary_normal` function for 3D cases.
+
+---
+
+### **New Features**
+
+1. **API Enhancements for Hyperelastic Models**
+
+   - Introduced new classes for potential energy models:
+
+     - `NeoHookeanPotential`
+     - `StVenantKirchoffPotential`
+     - `QuadraticGreenLagrangePotential`
+
+   - Updated the API of `HyperElasticForm` to now require a potential energy as an argument. This change simplifies the implementation of new potential energy models.
+
+2. **Morphoelastic Problem Modeling**
+
+   - Added `MorphoElasticForm` and `GBVP` classes to support modeling morphoelastic problems.
+
+3. **Domain and Mesh Handling**
+
+   - Added `CustomDomainGmsh` class, which allows loading `.msh` files for working with complex domains.
+
+4. **Growth Laws and Heterogeneous Growth**
+
+   - Added classes for different growth laws:
+
+     - `ConstantGrowth`
+     - `TimeDependentGrowth`
+     - `StrainDependentGrowth`
+
+   - Introduced the `HeterogeneousGrowth` class, enabling assignment of different growth laws to various subdomains.
+
+5. **Boundary Conditions Enhancement**
+   - Improved boundary condition handling. Boundary conditions can now be scalar, vector, or tensor values with variables, increasing flexibility.
+
+---
+
+### **Documentation and Tutorials**
+
+- Added new tutorials:
+
+  - **Visualization**: Demonstrations using `pyvista`.
+  - **Domain Creation**: Tutorials on working with complex domains using `gmsh`.
+  - **Morphoelastic Problems**: Examples of handling morphoelastic problems.