Add __all__ to feature package

skimage/feature/__init__.py

@@ -6,3 +6,19 @@ from .corner import (corner_kitchen_rosenfeld, corner_harris, corner_shi_tomasi,
                      corner_foerstner, corner_subpix, corner_peaks)
 from .corner_cy import corner_moravec
 from .template import match_template
+
+
+__all__ = ['daisy',
+           'hog',
+           'greycomatrix',
+           'greycoprops',
+           'local_binary_pattern',
+           'peak_local_max',
+           'corner_kitchen_rosenfeld',
+           'corner_harris',
+           'corner_shi_tomasi',
+           'corner_foerstner',
+           'corner_subpix',
+           'corner_peaks',
+           'corner_moravec',
+           'match_template']