Add some docs and bump to 0.4.1

Author: metab0t

Diff for: docs/source/changelog.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## 0.4.1
+- Support writing solution files in HiGHS
+- Pass the names of variables and constraints to HiGHS
+- Add `model.close()` and `env.close()` methods to allow users release the license of commercial solvers manually
+
 ## 0.4.0
 - Add `model.add_m_variables` and `model.add_m_linear_constraints` matrix modeling API
 - Add `model.computeIIS` and IIS related attributes for constraint and variable

Diff for: docs/source/gurobi.md

@@ -29,6 +29,18 @@ env.start()
 model = gurobi.Model(env)
 ```
 
+For users who want to release the license immediately after the optimization, you can call the `close` method of all models created and the `gurobi.Env` object. It applies to other commercial solvers supported as well.
+
+```python
+env = gurobi.Env()
+model = gurobi.Model(env)
+
+# do something with the model
+
+model.close()
+env.close()
+```
+
 ## The capability of `gurobi.Model`
 
 ### Supported constraints

Diff for: pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "scikit_build_core.build"
 
 [project]
 name = "pyoptinterface"
-version = "0.4.0"
+version = "0.4.1"
 description = "Python interface to multiple optimization solvers"
 readme = "README.md"
 requires-python = ">=3.9"