Update Flake8 Preferences

Enable all the errors - the code isn't too bad stylistically.

Remove maximum complexity threshold. The code base is rather complex
(for now).

Set maximum line length to 80. This is slightly more generous than the
default value of 79 but less generous than the previously suggested
120.

Allow certain lines to be ignored - this is necessary for lines which
will trip up the checks in python2 but not python3 or vice versa due
to differences between the python versions.

.flake8

@@ -4,36 +4,14 @@ exclude =
     .git,
     # Do not track virtualenv dir
     venv,
+    # Ignore folders in gitignore
+    dist,
+    build,
     # Do not track pycache dirs
     __pycache__,
 
-# A nested complexity of more than 5 is a sign that we should perhaps
-#  flatten out the code's cyclomatic complexity...
-max-complexity = 5
-
-# All modern monitors should at least handle 120 chars in a row without wrapping
-max-line-length = 120
-
-# Default errors ++: http://pep8.readthedocs.io/en/release-1.7.x/intro.html
-#   (Contains E/W error codes, at least some)
-#  DXYZ error codes listed here: http://pep257.readthedocs.io/en/latest/error_codes.html
-ignore =
-    D204,   # Not Default
-    E121,
-    E126,
-    E133,
-    E226,
-    W503,
-
-# Which errors to enable (display)
-#select-errors =
-    E,
-    F,
-    W,
-    C
-
-# Ignore '#noqa' pragmas
-disable-noqa = True
+max-line-length = 80
+ignore = 
 
 # Output config:
 show-source = True