Add Codecov (#181)

* Update pipeline.yml

* Delete .coveralls.yml

* Update README.md

.github/workflows/pipeline.yml

@@ -125,9 +125,11 @@ jobs:
         pip install . --no-deps --no-build-isolation
         coverage run --omit="pyfileindex/_version.py,tests/*" -m unittest discover tests
         coverage xml
-    - name: Coveralls
+    - name: Upload coverage reports to Codecov
       if: matrix.label == 'linux-64-py-3-12'
-      uses: coverallsapp/github-action@v2
+      uses: codecov/codecov-action@v5
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
 
   unittest_old:
     needs: [black]
@@ -161,4 +163,4 @@ jobs:
         run: gh pr merge --auto --squash "$PR_URL"
         env:
           PR_URL: ${{github.event.pull_request.html_url}}
-          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}
+          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}

README.md

@@ -2,7 +2,7 @@
 PyFileIndex - pythonic file system index 
 
 [![Pipeline](https://github.com/pyiron/pyfileindex/actions/workflows/pipeline.yml/badge.svg)](https://github.com/pyiron/pyfileindex/actions/workflows/pipeline.yml)
-[![Coverage Status](https://coveralls.io/repos/github/pyiron/pyfileindex/badge.svg?branch=main)](https://coveralls.io/github/pyiron/pyfileindex?branch=main)
+[![codecov](https://codecov.io/gh/pyiron/pyfileindex/graph/badge.svg?token=J9EWZBBKPH)](https://codecov.io/gh/pyiron/pyfileindex)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/pyiron/pyfileindex/main?filepath=notebooks%2Fdemo.ipynb)
 
 The pyfileindex helps to keep track of files in a specific directory, to monitor added files, modified files and deleted files. The module is compatible with Python 3.7 or later but restricted to Unix-like system - Windows is not supported.