Update cflib dependency to ~=0.1.12

Author: ataffanel

setup.py

@@ -127,7 +127,7 @@ def relative(lst, base=''):
         ],
     },
 
-    install_requires=platform_requires + ['cflib~=0.1.11',
+    install_requires=platform_requires + ['cflib~=0.1.12',
                                           'appdirs~=1.4.0',
                                           'pyzmq~=19.0',
                                           'pyqtgraph~=0.11',