REF remove la.IO.merge method

RELEASE.rst

@@ -28,6 +28,7 @@ la 0.7
 - la now supports Python 3 (thanks to Benjamin Root for initial porting)
 - Can now index into a larry with a 1d bool larry
 - Added setitem ability to label indexing (lix)
+- la.IO no longer keeps the archive connection open between calls
 - C files generated with Cython 0.19.1 instead of 0.15.1
 
 **Breakage from la 0.6**
@@ -36,6 +37,7 @@ la 0.7
 - deprecated lar.movingsum() removed (use faster lar.move_sum() instead)
 - deprecated lar.movingrank() removed (use faster lar.move_ranking() instead)
 - la.stack() now sorts labels
+- merge method of the la.IO class has been removed
 
 **Bug fixes**
 

la/io.py

@@ -154,23 +154,6 @@ def clear(self):
         for key in self:
             self.__delitem__(key)
 
-    def merge(self, key, lar, update=False):
-        """
-        Merge, or optionally update, a larry with a second larry.
-
-        See larry.merge for details.
-
-        Note: the entire larry is loaded from the archive, merged with `lar`
-        and then the merged larry is saved back to the archive. The resize
-        function of h5py is not used. In other words, this function might not
-        be practical for very large larrys.
-
-        """
-        lar1 = self[key][:]
-        lar2 = lar1.merge(lar, update=update)
-        del self.f[key]
-        self[key] = lar2
-
     def __iter__(self):
         return iter(self.keys())