use SequenceLearner from adaptive

Author: basnijholt

example.ipynb

@@ -177,7 +177,7 @@
     "\n",
     "import numpy as np\n",
     "\n",
-    "from adaptive_scheduler.sequence_learner import SequenceLearner # https://github.com/python-adaptive/adaptive/pull/193\n",
+    "from adaptive import SequenceLearner\n",
     "from adaptive_scheduler.utils import split, combo_to_fname\n",
     "from adaptive.utils import named_product\n",
     "\n",