prepare for release 0.4.0 (#38)

- updated CHANGELOG
- updated conda meta.yml

Author: orbeckst

CHANGELOG

@@ -12,6 +12,16 @@ The rules for this file:
   * accompany each entry with github issue/PR number (Issue #xyz)
 
 ------------------------------------------------------------------------------
+01/17/2017 orbeckst, kain88-de
+
+  * 0.4.0
+
+  Changes/Enhancements
+
+  * Type of DX arrays is now set based on the numpy array dtype or can
+    be manually set by the user to increase interoperability with
+    tools such as PyMOL (issue #35)
+
 05/13/2016 kain88-de
 
   * 0.3.3

meta.yaml

@@ -1,6 +1,6 @@
 package:
   name: griddataformats
-  version: "0.3.3"
+  version: "0.4.0"
 
 source:
     path: .