Add branch coverage, badge, and changelog entry (#33)

Author: oscargus

.github/workflows/test.yml

@@ -52,7 +52,7 @@ jobs:
 
       - name: Tests
         run: |
-          pytest --mpl --color=yes --cov=mplsignal tests
+          pytest --mpl --color=yes --cov=mplsignal --cov-branch tests
 
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v3
@@ -106,7 +106,7 @@ jobs:
 
       - name: Tests
         run: |
-          pytest --mpl --color=yes --cov=mplsignal tests
+          pytest --mpl --color=yes --cov=mplsignal --cov-branch tests
 
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v3

README.md

@@ -1,4 +1,5 @@
 [![Build status](https://github.com/oscargus/mplsignal/workflows/Tests/badge.svg)](https://github.com/oscargus/mplsignal/actions?query=workflow%3ATests)
+[![codecov](https://codecov.io/gh/oscargus/mplsignal/branch/main/graph/badge.svg?token=0ICY4NEVJM)](https://codecov.io/gh/oscargus/mplsignal)
 [![License](https://img.shields.io/github/license/oscargus/mplsignal)](https://github.com/oscargus/mplsignal/blob/main/LICENSE)
 [![PyPI](https://img.shields.io/pypi/v/mplsignal)](https://pypi.org/project/mplsignal/)
 [![GitHub release (latest by date)](https://img.shields.io/github/v/release/oscargus/mplsignal)](https://github.com/oscargus/mplsignal/releases)

changelog.rst

@@ -37,6 +37,7 @@ Added
 - ``multiplicity_props`` argument to ``plane_plots.*plane*``-functions that allows
   styling of pole/zero multiplicity texts.
 - This changelog.
+- Code coverage at CodeCov.
 
 Fixed
 ^^^^^