ChangeLog.markdown: switch to h2 for the versions and use more Markdown syntax

ChangeLog.markdown

@@ -1,11 +1,11 @@
 # Mouse Wheel ChangeLog
 
-# 3.1.1
+## 3.1.1
 
 * Fix rounding issue with deltas less than zero
 
 
-# 3.1.0
+## 3.1.0
 
 * Fix Firefox 17+ issues by using new wheel event
 * Normalize delta values
@@ -13,68 +13,68 @@
 * Support AMD loaders
 
 
-# 3.0.6
+## 3.0.6
 
 * Fix issue with delta being 0 in Firefox
 
 
-# 3.0.5
+## 3.0.5
 
 * jQuery 1.7 compatibility
 
 
-# 3.0.4
+## 3.0.4
 
 * Fix IE issue
 
 
-# 3.0.3
+## 3.0.3
 
 * Added deltaX and deltaY for horizontal scrolling support (Thanks to Seamus Leahy)
 
 
-# 3.0.2
+## 3.0.2
 
 * Fixed delta being opposite value in latest Opera
-* No longer fix pageX, pageY for older mozilla browsers
+* No longer fix `pageX`, `pageY` for older Mozilla browsers
 * Removed browser detection
 * Cleaned up the code
 
 
-# 3.0.1
+## 3.0.1
 
 * Bad release... creating a new release due to plugins.jquery.com issue :(
 
 
-# 3.0
+## 3.0
 
 * Uses new special events API in jQuery 1.2.2+
-* You can now treat "mousewheel" as a normal event and use .bind, .unbind and .trigger
+* You can now treat `mousewheel` as a normal event and use `.bind`, `.unbind` and `.trigger`
 * Using jQuery.data API for expandos
 
 
-# 2.2
+## 2.2
 
-* Fixed pageX, pageY, clientX and clientY event properties for Mozilla based browsers
+* Fixed `pageX`, `pageY`, `clientX` and `clientY` event properties for Mozilla based browsers
 
 
-# 2.1.1
+## 2.1.1
 
 * Updated to work with jQuery 1.1.3
 * Used one instead of bind to do unload event for clean up.
 
 
-# 2.1
+## 2.1
 
 * Fixed an issue with the unload handler
 
 
-# 2.0
+## 2.0
 
 * Major reduction in code size and complexity (internals have change a whole lot)
 
 
-# 1.0
+## 1.0
 
 * Fixed Opera issue
 * Fixed an issue with children elements that also have a mousewheel handler