Merge branch 'master' into index_games

nifty/sugar.py

@@ -55,5 +55,5 @@ def create_power_operator(domain, power_spectrum, dtype=None,
     fp = Field(power_domain, val=power_spectrum, dtype=dtype,
                distribution_strategy=distribution_strategy)
     f = fp.power_synthesize(mean=1, std=0, real_signal=False)
-
+    f **= 2
     return DiagonalOperator(domain, diagonal=f, bare=True)