Refactoring and fixes around ioformats.

requirements-dev.txt

@@ -4,7 +4,7 @@ arrow==0.10.0
 babel==2.4.0
 binaryornot==0.4.3
 certifi==2017.4.17
-chardet==3.0.3
+chardet==3.0.4
 click==6.7
 cookiecutter==1.5.1
 coverage==4.4.1
@@ -19,6 +19,7 @@ poyo==0.4.1
 py==1.4.34
 pygments==2.2.0
 pytest-cov==2.5.1
+pytest-sugar==0.8.0
 pytest-timeout==1.2.0
 pytest==3.1.1
 python-dateutil==2.6.0
@@ -28,5 +29,6 @@ six==1.10.0
 snowballstemmer==1.2.1
 sphinx==1.6.2
 sphinxcontrib-websupport==1.0.1
+termcolor==1.1.0
 urllib3==1.21.1
 whichcraft==0.4.1