Typing (#128)

* fix: CI yml name

* add: mypy configuraion

* add: type annotation to waybackpy modules

* add: type annotation to test modules

* fix: mypy command

* add: types-requests to dev deps

* fix: disable max-line-length

* fix: move pytest.ini into setup.cfg

* add: urllib3 to deps

* fix: Retry (ref: https://github.com/python/typeshed/issues/6893)

* fix: f-string

* fix: shorten long lines

* add: staticmethod decorator to no-self-use methods

* fix: str(headers)->headers_str

* fix: error message

* fix: revert "str(headers)->headers_str" and ignore assignment CaseInsensitiveDict with str

* fix: mypy error

waybackpy/exceptions.py

@@ -14,6 +14,8 @@ class WaybackError(Exception):
      All other exceptions are inherited from this class.
     """
 
+    pass
+
 
 class RedirectSaveError(WaybackError):
     """
@@ -21,32 +23,44 @@ class RedirectSaveError(WaybackError):
     redirect URL is archived but not the original URL.
     """
 
+    pass
+
 
 class URLError(Exception):
     """
     Raised when malformed URLs are passed as arguments.
     """
 
+    pass
+
 
 class MaximumRetriesExceeded(WaybackError):
     """
     MaximumRetriesExceeded
     """
 
+    pass
+
 
 class MaximumSaveRetriesExceeded(MaximumRetriesExceeded):
     """
     MaximumSaveRetriesExceeded
     """
 
+    pass
+
 
 class ArchiveNotInAvailabilityAPIResponse(WaybackError):
     """
     Could not parse the archive in the JSON response of the availability API.
     """
 
+    pass
+
 
 class InvalidJSONInAvailabilityAPIResponse(WaybackError):
     """
     availability api returned invalid JSON
     """
+
+    pass