Bump version to 1.6.

Author: nathanaelkane

doc/indent_guides.txt

@@ -9,8 +9,8 @@
 
 
 Author:      Nate Kane <nathanaelkane AT gmail DOT com>
-Version:     1.5
-Last Change: 13 Mar 2011
+Version:     1.6
+Last Change: 01 Jan 2012
 
 ==============================================================================
 CONTENTS                                                *indent-guides-contents*
@@ -226,6 +226,13 @@ Bug reports, feedback, suggestions etc are welcomed.
 ==============================================================================
 7. CHANGELOG                                           *indent-guides-changelog*
 
+1.6~
+  * Added option g:|indent_guides_space_guides| to control whether spaces are
+    considered as indention (thanks scoz).
+  * Added 'doc/tags' to gitignore (thanks lenniboy).
+  * Fixed E803 ID not found spam (thanks mutewinter).
+  * Fixed str2float issue with Vim 7.1 (thanks acx0).
+
 1.5~
   * Added highlight support for files with a mixture of tab and space indent
     styles (thanks graywh).