Added deprecation warning

TODO.txt

@@ -1,7 +1,8 @@
 Version 0.11
 ------------
 * Remove deprecated `reverse_map` parameter of `skimage.transform.warp`
-
+* Change depecrated `enforce_connectivity=False`on skimage.segmentation.slic
+  and set it to True as default
 
 Version 0.10
 ------------

skimage/segmentation/slic_superpixels.py

@@ -48,7 +48,7 @@ def slic(image, n_segments=100, compactness=10., max_iter=10, sigma=None,
         recommended.
     ratio : float, optional
         Synonym for `compactness`. This keyword is deprecated.
-    enforce_connectivity: bool, optional
+    enforce_connectivity: bool, optional (default False)
         Whether the generated segments are connected or not
     min_size_factor: float, optional
         Proportion of the minimum segment size to be removed with respect
@@ -112,6 +112,11 @@ def slic(image, n_segments=100, compactness=10., max_iter=10, sigma=None,
                       'instead.')
         compactness = ratio
 
+    if enforce_connectivity is None:
+        warnings.warn('Deprecation: enforce_connectivity will default to'
+                      ' True in future versions.')
+        enforce_connectivity = False
+
     image = img_as_float(image)
     is_2d = False
     if image.ndim == 2: