README: updated repostatus badge to Active

README.md

@@ -1,7 +1,7 @@
 # pagexml-tools
 
 [![GitHub Actions](https://github.com/knaw-huc/pagexml/workflows/tests/badge.svg)](https://github.com/knaw-huc/pagexml/actions)
-[![Project Status: WIP – Initial development is in progress, but there has not yet been a stable, usable release suitable for the public.](https://www.repostatus.org/badges/latest/wip.svg)](https://www.repostatus.org/#wip)
+[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
 [![Documentation Status](https://readthedocs.org/projects/pagexml/badge/?version=latest)](https://pagexml.readthedocs.io/en/latest/?badge=latest)
 [![PyPI](https://img.shields.io/pypi/v/pagexml-tools)](https://pypi.org/project/pagexml-tools/)
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/pagexml-tools)](https://pypi.org/project/pagexml-tools/)