Make doc strings PEP8 compliant

According to PEP8, doc strings should be 72 characters wide at most.
They now are.

.flake8

@@ -1,3 +1,4 @@
 [flake8]
 ignore = E123,W503,E722
 max-line-length = 88
+max-doc-length = 72

reviewcheck/app.py

@@ -1,7 +1,9 @@
 """
-A script to show you what threads in GitLab you've forgotten to respond to.
+A script to show you what threads in GitLab you've forgotten to respond
+to.
 
-You have to configure the script before running it by running reviewcheck --configure
+You have to configure the script before running it by running
+reviewcheck --configure.
 """
 import json
 import logging
@@ -276,7 +278,7 @@ def show_reviews(config: Dict[str, Any]) -> None:
 
         for comment in discussion_data:
             # When minimal view is requsted, only show threads where a
-            # response is required
+            # response is required.
             if hide_replied_discussions:
                 if comment["notes"][-1]["author"]["username"] == user:
                     continue

reviewcheck/common/exceptions.py

@@ -1,6 +1,6 @@
 class RCException(Exception):
     """
-    Base exception to inherit from when creating custom exceptions and to use directly
-    when it's not necessary to differentiate excepitons. It is caught in main and will
-    print the message in the exceptions.
+    Base exception to inherit from when creating custom exceptions and
+    to use directly when it's not necessary to differentiate excepitons.
+    It is caught in main and will print the message in the exceptions.
     """

reviewcheck/config.py

@@ -14,7 +14,8 @@ def __init__(self, reconfigure: bool):
         self.reconfigure = reconfigure
 
     def setup_configuration(self) -> None:
-        # Only attempt to write the configuration file if it does not already exist
+        # Only attempt to write the configuration file if it does not
+        # already exist.
         if self.reconfigure or not Constants.CONFIG_PATH.exists():
             Constants.CONFIG_PATH.parent.mkdir(parents=True, exist_ok=True)
 
@@ -48,11 +49,12 @@ def setup_configuration(self) -> None:
 
     def get_configuration(self) -> Optional[Dict[str, Any]]:
         """
-        Reads the configuration file into a dictionary. If the configuration file does
-        not exist, queries the user for information and writes it.
+        Reads the configuration file into a dictionary. If the
+        configuration file does not exist, queries the user for
+        information and writes it.
 
-        :return: A dict containing the contents of the configuration file, or None if
-        the file does not exist.
+        :return: A dict containing the contents of the configuration
+            file, or None if the file does not exist.
         """
 
         self.setup_configuration()

tests/test_config.py

@@ -16,10 +16,12 @@ class TestConfig(TestCase):
     @mock.patch("builtins.input")
     def test_setup_configuration(self, mock_input: mock.MagicMock) -> None:
         """
-        Verifies that the interactive configuration setup works as expected.
+        Verifies that the interactive configuration setup works as
+        expected.
         """
 
-        # The setup_configuration method reads input from the user five times in a row:
+        # The setup_configuration method reads input from the user five
+        # times in a row:
         # token, username, api url, jira url, and finally project IDs
         mock_input.side_effect = [
             "very_secret",
@@ -57,8 +59,8 @@ def test_setup_configuration(self, mock_input: mock.MagicMock) -> None:
 
     def test_setup_configuration_without_reconfigure(self) -> None:
         """
-        Verifies that the configuration setup does not alter anything if the file
-        already exists.
+        Verifies that the configuration setup does not alter anything if
+        the file already exists.
         """
 
         with tempfile.TemporaryDirectory(