[formatting] reformat using "black -t py34"

getting rid of thinking about consistent formatting...

modules/core/date.py

@@ -10,12 +10,14 @@ Parameters:
 import core.decorators
 from .datetime import Module
 
+
 class Module(Module):
     @core.decorators.every(hours=1)
     def __init__(self, config, theme):
         super().__init__(config, theme)
 
     def default_format(self):
-        return '%x'
+        return "%x"
+
 
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