Added enable/disable chat mode (allows for alphabetical key controls), battle window anchoring fixed (thank you River) & more:

* Added better walk key binding (for other uses, like the sample given WASD).
* Made string.ends part of the string meta table rather than parameter based.

modules/corelib/string.lua

@@ -20,8 +20,8 @@ function string:starts(start)
   return string.sub(self, 1, #start) == start
 end
 
-function string.ends(s, test)
-   return test =='' or string.sub(s,-string.len(test)) == test
+function string:ends(test)
+   return test =='' or string.sub(self,-string.len(test)) == test
 end
 
 function string:trim()