release 0.20.0

Author: amorison

docs/user-guide/install.md

@@ -40,7 +40,7 @@ name = "my-project"
 version = "0.1.0"
 requires-python = ">=3.10"
 dependencies = [
-    "stagpy~=0.19.0",
+    "stagpy~=0.20.0",
 ]
 ```
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "stagpy"
-version = "0.19.0"
+version = "0.20.0"
 description = "Tool for StagYY output files processing"
 readme = "README.md"
 authors = [