switch default verbosity in learners to 1

Author: ablaom

src/learners/dimension_reduction.jl

@@ -49,7 +49,7 @@ end
 
 LearnAPI.learner(model::TruncatedSVDFitted) = model.learner
 
-function LearnAPI.fit(learner::TruncatedSVD, X; verbosity=LearnAPI.default_verbosity())
+function LearnAPI.fit(learner::TruncatedSVD, X; verbosity=1)
 
     # unpack hyperparameters:
     codim = learner.codim

src/learners/ensembling.jl

@@ -360,7 +360,7 @@ struct StumpRegressorFitted
     rng
 end
 
-function LearnAPI.fit(learner::StumpRegressor, data; verbosity=LearnAPI.default_verbosity())
+function LearnAPI.fit(learner::StumpRegressor, data; verbosity=1)
 
     x, y = data
     rng = deepcopy(learner.rng)

src/logging.jl

@@ -191,7 +191,7 @@ const STRIP2_INVERSE = """
 const OBS_INVOLUTIVITY_FIT =
     """
 
-    Testing that `obs(learner, obs(learner, X)) == obs(learner, X)` (involutivity).
+    Testing that `obs(learner, obs(learner, data)) == obs(learner, data)` (involutivity).
 
   """
 const OBS_AND_FIT = """