Update CHANGELOG.md

Author: photonstorm

CHANGELOG.md

@@ -120,6 +120,7 @@ If you used any of them in your code, please update to the new function names be
 ### BitmapText New Features, Updates and API Changes
 
 * `BitmapText.setCharacterTint` is a new method that allows you to set a tint color (either additive, or fill) on a specific range of characters within a static Bitmap Text. You can specify the start and length offsets and a per-corner tint color.
+* `BitmapText.setDropShadow` is a new method that allows you to apply a drop shadow effect to a Bitmap Text object. You can set the horizontal and vertical offset of the shadow, as well as the color and alpha levels. Call this method with no parameters to clear a shadow.
 * `BitmapTextWebGLRenderer` has been rewritten from scratch to make use of the new pre-cached WebGL uv texture and character location data generated by `GetBitmapTextSize`. This has reduced the number of calculations made in the function dramatically, as it no longer has work out glyph advancing or offsets during render, but only when the text content updates.
 * `BitmapText.getCharacterAt` is a new method that will return the character data from the BitmapText at the given `x` and `y` corodinates. The character data includes the code, position, dimensions and glyph information.
 * The `BitmapTextSize` object returned by `BitmapText.getTextBounds` has a new property called `characters` which is an array that contains the scaled position coordinates of each character in the BitmapText, which you could use for tasks such as determining which character in the BitmapText was clicked.
@@ -129,6 +130,11 @@ If you used any of them in your code, please update to the new function names be
 * The `BitmapText.getTextBounds` method was being called every frame, even if the bounds didn't change, potentially costing a lot of CPU time depending on the text length and quantity of them. It now only updates the bounds if they change.
 * The `GetBitmapTextSize` function used `Math.round` on the values, if the `round` parameter was `true`, which didn't create integers. It now uses `Math.ceil` instead to give integer results.
 * The `GetBitmapTextSize` function has a new boolean parameter `updateOrigin`, which will adjust the origin of the parent BitmapText if set, based on the new bounds calculations.
+* `BitmapText.preDestroy` is a new method that will tidy-up all of the BitmapText data during object destruction.
+* `BitmapText.dropShadowX` is a new property that controls the horizontal offset of the drop shadow on the Bitmap Text.
+* `BitmapText.dropShadowY` is a new property that controls the vertical offset of the drop shadow on the Bitmap Text.
+* `BitmapText.dropShadowColor` is a new property that sets the color of the Bitmap Text drop shadow.
+* `BitmapText.dropShadowAlpha` is a new property that sets the alpha of the Bitmap Text drop shadow.
 
 ### New Features