Add python 3.10 to test suite for github actions

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8, 3.9]
+        python-version: ['3.8', '3.9', '3.10']
 
     # Skip CI if 'skip ci' is contained in latest commit message
     if: "!contains(github.event.head_commit.message, 'skip ci')"
@@ -30,7 +30,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python setup.py install
+        python -m pip install -e .
 
     - name: Test with pytest
       run: |

.github/workflows/documentation.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -e .[dev]
+        python -m pip install -e .[dev]
 
     - name: Set up Pandoc
       uses: r-lib/actions/setup-pandoc@v1

docs/userguide/installation.rst

@@ -7,8 +7,12 @@ In order to install the latest release of ``reciprocalspaceship``, please use ``
 
   pip install reciprocalspaceship
 
+or ``conda``::
+
+  conda install -c conda-forge reciprocalspaceship
+
 It is also always possible to install the library by cloning the repository from GitHub::
 
   git clone https://github.com/Hekstra-Lab/reciprocalspaceship
   cd reciprocalspaceship
-  python setup.py install
+  python -m pip install -e .