NulledExceptions
diff --git a/‎CHANGELOG.md
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diff --git a/‎plotly/tests/test_core/test_tools/test_figure_factory.py
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diff --git a/‎plotly/tests/test_optional/optional_utils.py
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@@ -4,8 +4,15 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [1.8.7] - 2015-10-01
+### Added
+- The FigureFactory can now create dendrogram plots with `.create_dendrogram`.
+
 ## [1.8.6] - 2015-09-28
+### Fixed
 - Saving "world_readable" to your config file via `plotly.tools.set_config` actually works.
+
+### Added
 - You can also save `auto_open` and `sharing` to the config file so that you can forget these
   keyword argument in `py.iplot` and `py.plot`.
 
 
@@ -3,7 +3,6 @@
 
 import datetime
 from nose.tools import raises
-
 import plotly.tools as tls
 from plotly.exceptions import PlotlyError
 from plotly.graph_objs import graph_objs
 
@@ -3,11 +3,93 @@
 import matplotlib
 # Force matplotlib to not use any Xwindows backend.
 matplotlib.use('Agg')
+
+import numpy as np
+
 from plotly.matplotlylib import Exporter, PlotlyRenderer
+from plotly.tests.utils import is_num_list
+from plotly.utils import get_by_path, node_generator
 
 
 def run_fig(fig):
     renderer = PlotlyRenderer()
     exporter = Exporter(renderer)
     exporter.run(fig)
     return renderer
+
+
+class NumpyTestUtilsMixin(object):
+    """Provides some helper functions to make testing easier."""
+
+    def _format_path(self, path):
+        str_path = [repr(p) for p in path]
+        return '[' + ']['.join(sp for sp in str_path) + ']'
+
+    def assert_dict_equal(self, d1, d2, msg=None):
+        """
+        Uses `np.allclose()` on number arrays.
+
+        :raises: (AssertionError) Using TestCase's self.failureException
+
+        """
+        self.assertIsInstance(d1, dict, 'First argument is not a dictionary')
+        self.assertIsInstance(d2, dict, 'Second argument is not a dictionary')
+
+        for node, path in node_generator(d1):
+
+            # first check that this sub-dict is contained in both dicts
+            try:
+                comp_node = get_by_path(d2, path)
+            except (KeyError, IndexError):
+                standard_msg = (
+                    'Path {} exists in dict 1, but not dict 2.'
+                    .format(path)
+                )
+                self.fail(self._formatMessage(msg, standard_msg))
+            self.assertIsInstance(
+                comp_node, dict, 'Value at path {} is not a dict.'.format(path)
+            )
+
+            # check that each key in the first is contained in the second
+            for key, val in node.items():
+                if isinstance(val, dict):
+                    continue  # this gets tested as its own node
+
+                # check that the values at this key are equal
+                val_path = path + (key, )
+                try:
+                    comp_val = comp_node[key]
+                except KeyError:
+                    standard_msg = (
+                        'Path {} exists in dict 1, but not dict 2.'
+                        .format(self._format_path(val_path))
+                    )
+                    self.fail(self._formatMessage(msg, standard_msg))
+
+                if (isinstance(val, np.ndarray) or
+                        isinstance(comp_val, np.ndarray)):
+                    if np.array_equal(val, comp_val):
+                        continue
+                elif val == comp_val:
+                    continue
+
+                if is_num_list(val) and is_num_list(comp_val):
+                    if np.allclose(val, comp_val):
+                        continue
+
+                standard_msg = (
+                    'Value comparison failed at path {}.\n'
+                    '{} != {}'
+                    .format(self._format_path(val_path), val, comp_val)
+                )
+                self.fail(self._formatMessage(msg, standard_msg))
+
+            # finally, check that keys in the second are in the first
+            for key in comp_node:
+                val_path = path + (key, )
+                if key not in node:
+                    standard_msg = (
+                        'Path {} exists in dict 2, but not dict 1.'
+                        .format(self._format_path(val_path))
+                    )
+                    self.fail(self._formatMessage(msg, standard_msg))