Add types and function specifications.

2 new functions exported, to_lower and to_upper.


git-svn-id: http://erlstream.googlecode.com/svn/trunk@4 2c2113e2-7d46-11de-87c4-3d7c82793bd4

Author: christopher.faulet

ChangeLog

@@ -1,3 +1,8 @@
+2009-07-30  Christopher Faulet  <[email protected]>
+
+	* stream.erl: Add types and function specifications. 2
+	new functions exported, to_lower and to_upper.
+
 2009-07-30  Christopher Faulet  <[email protected]>
 
 	* First commit