update changelog

CHANGELOG.md

@@ -1,12 +1,20 @@
 middleclass changelog
 ====================
 
-Version 4.1.0
+# Version 4.1.1
+
+* Fixed a bug in which `static` values which evaluated to `false` were not available
+  in subclasses (#51, thanks @qaisjp for the patch!)
+* `isInstanceOf` does not throw an error any more when its first parameter is a
+  primitive (#55) (This effectively undoes the change introduced in 4.1.0)
+
+
+# Version 4.1.0
 
 * Simplifies implementation of `isInstanceOf` and `isSubclassOf`. They will now raise an error if their first
   parameter (the `self`) isn't an instance or a class respectively.
 
-Version 4.0.0
+# Version 4.0.0
 
 * Unified the method and metamethod lookup into a single algorithm
 * Added the capacity of setting up the `__index` metamethod in classes
@@ -14,19 +22,19 @@ Version 4.0.0
 * Removed default method `Class:implements(<mixin>)`
 * Renamed several internal functions
 
-Version 3.2.0
+# Version 3.2.0
 
 * Changed the way metamethods were handled to fix certain bugs (un-stubbed metamethods could not be inherited)
 
-Version 3.1.0
+# Version 3.1.0
 
 * Added Lua 5.3 metamethod support (`__band`, `__bor`, `__bxor`, `__shl`, `__bnot`)
 
-Version 3.0.1
+# Version 3.0.1
 
 * Added `__len`, `__ipairs` and `__pairs` metamethods for Lua 5.2
 
-Version 3.0
+# Version 3.0
 
 * Anything that behaves reasonably like a class can be a class (no internal list of classes)
 * The `class` global function is now just the return value of `require
@@ -37,8 +45,7 @@ Version 3.0
 * The global function `implements` becomes `class.Object.static.implements`. Parameter order is reversed.
 * Specs have been translated from telescope to busted
 
-
-Version 2.0
+# Version 2.0
 
 * Static methods are now separated from instance methods
 * class.superclass has now become class.super