Move flake8 reqs to tests require, exclude silly pycodestyle rule

.flake8

@@ -1,3 +1,3 @@
 [flake8]
 max-line-length = 120
-ignore=C408,C815,A003,A002
+ignore=C408,C815,A003,A002,W504

.travis.yml

@@ -14,7 +14,6 @@ matrix:
 
 install:
   - pip install -U pip setuptools
-  - pip install -U pytest flake8-tuple flake8-quotes flake8-comprehensions flake8-commas flake8-builtins
 
 script:
   - python setup.py test

disco/types/base.py

@@ -80,7 +80,8 @@ class Field(object):
                 self.default = self.deserializer.default
             elif (inspect.isclass(self.deserializer) and
                     issubclass(self.deserializer, Model) and
-                    self.default is UNSET and create):
+                    self.default is UNSET and
+                    create):
                 self.default = self.deserializer
 
     @property

setup.py

@@ -39,7 +39,12 @@ setup(
     setup_requires=['pytest-runner==2.11.1'],
     tests_require=[
         'pytest==3.2.1',
-        'pytest-benchmark==3.1.1'
+        'pytest-benchmark==3.1.1',
+        'flake8-tuple==0.2.13',
+        'flake8-quotes==1.0.0',
+        'flake8-comprehensions==1.4.1',
+        'flake8-commas==2.0.0',
+        'flake8-builtins==1.4.1',
     ],
     classifiers=[
         'Development Status :: 4 - Beta',