bump up version number

Author: kinnala

README.md

@@ -209,7 +209,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
 with respect to documented and/or tested features.
 
-### Unreleased
+### [9.0.1] - 2024-01-12
 
 - Fixed: `ElementVector` works also for split_bases/split_indices in case `mesh.dim() != elem.dim`
 

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = scikit-fem
-version = 9.0.0
+version = 9.0.1
 author = Tom Gustafsson
 description = Simple finite element assemblers
 url = https://github.com/kinnala/scikit-fem