AverageLearner1D doesn't work with vectors

Author: basnijholt

Diff for: adaptive/learner/average_learner1D.py

@@ -21,13 +21,13 @@
 
 
 class AverageLearner1D(Learner1D):
-    """Learns and predicts a noisy function 'f:ℝ → ℝ^N'.
+    """Learns and predicts a noisy function 'f:ℝ → ℝ'.
 
     Parameters
     ----------
     function : callable
         The function to learn. Must take a tuple of ``(seed, x)`` and
-        return a real number or vector.
+        return a real number.
     bounds : pair of reals
         The bounds of the interval on which to learn 'function'.
     loss_per_interval: callable, optional