drop unittest, switch to pytest (#169)

* drop unittest, switch to pytest

* fix cov miss

.github/workflows/test.yml

@@ -31,12 +31,12 @@ jobs:
           pip install -r tests/requirements.txt --editable .
           pytest
       - name: Upload coverage to Codecov
-        uses: "codecov/codecov-action@v3"
+        uses: codecov/codecov-action@v3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
 
   tests-27:
-    name: "Python 2.7 on ubuntu-20.04"
+    name: Python 2.7 on ubuntu-20.04
     runs-on: ubuntu-20.04
     container:
       image: python:2.7-buster
@@ -47,6 +47,6 @@ jobs:
           pip install -r tests/requirements.txt
           python -m pytest
       - name: Upload coverage to Codecov
-        uses: "codecov/codecov-action@v3"
+        uses: codecov/codecov-action@v3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}

README.rst

@@ -209,7 +209,7 @@ tt    Time                                        time
 The type can also be a datetime format string, following the
 `1989 C standard format codes`_, e.g. ``%Y-%m-%d``. Depending on the
 directives contained in the format string, parsed output may be an instance
-``datetime.datetime``, ``datetime.time``, or ``datetime.date``.
+of ``datetime.datetime``, ``datetime.time``, or ``datetime.date``.
 
 .. code-block:: pycon