Latest Version: 2018.3 (December 13, 2018)

[ArenMook]

2.1.4:
- NEW: UIInput now supports multi-line input if its label is multi-line. Hold Ctrl when hitting Enter.
- FIX: UICheckboxControlledComponent will now use delegates by default.
- FIX: UITexture should now work properly again.

[ArenMook]

2.1.5:
- NEW: Added support for Unity 4.
- NEW: NGUI now uses Unity 3.5.5's newly-added Color32 for colors instead of Color, reducing the memory bandwidth a bit.
- NEW: UIStretch can now stretch to another widget's bounds, not just the screen.
- FIX: UIImageButton will no longer add a box collider if a non-box collider is present.
- FIX: NGUITools.ParseSymbol will now check to see if the symbol is valid.
- FIX: UITexture-related tweaks to UIWidget.
- FIX: UIAnchor can now anchor to labels.
- FIX: UISlicedSprite no longer uses padding.

[ArenMook]

2.1.6
- NEW: UISavedOption now works on a popup list as well.
- FIX: Replaced ifdefs for Unity 4 with a new helper functions for cleaner code (NGUITools.GetActive and NGUITools.SetActiveSelf).
- FIX: UITable was not properly keeping the contents within the draggable panel.
- FIX: UIDraggablePanel.UpdateScrollbars was not considering soft clipping properly, resulting in some jitterness.
- FIX: SpringPanel was not setting position / clipping when it finished, resulting in floating-point drifting errors.
- FIX: UIInput's "not selected" text can now be localized using UILocalize.

[ArenMook]

2.2.0:
- NEW: Added a sprite selection window that replaces the drop-down selection list. Think texture selection window for your sprites. The sprite selection window has a search box to narrow down your selection.
- NEW: Sprite preview is now shown in the Preview window, and is affected by the widget's color tint.
- NEW: Added warning messages when more than one widget is using the same depth value, and when more than one atlas is used by the panel.
- NEW: It's now possible to edit a sprite quickly by choosing the "edit" option.
- NEW: When editing a sprite in the atlas, a "Return to ..." button is shown if you've navigated here from a sprite.
- FIX: UIAnchor and UIStretch now work with labels properly.
- FIX: UITexture will no longer occasionally lose the reference to its texture.
- FIX: NGUITools.EncodeColor now works in Flash (created a work-around).

[ArenMook]

2.2.1
- FIX: Sprite list should now be faster.
- FIX: Sprite border editing should now work properly again.
- FIX: A couple of other minor fixes.

[ArenMook]

2.2.2:
- NEW: You can now specify a minimum and maximum height on UIRoot.
- NEW: Label shadow and outline distance can now be modified.
- NEW: Added UIButtonActivate -- an extremely simple script that can be used to activate or deactivate something on click.
- NEW: Creating a new UI will now automatically add a kinematic rigidbody to the UIRoot, as it's supposedly faster for physics checks.
- NEW: Game objects destroyed via NGUITools.Destroy will now automatically get un-parented.
- NEW: UIEventListener now has an OnKey delegate.
- FIX: Sprite preview should now display wide sprites correctly.
- FIX: Fixed copy/paste error in the atlas inspector (thanks athos!).
- FIX: UIGrid will no longer consider destroyed game objects.
- FIX: Couple of other smaller fixes.

[ArenMook]

2.2.3:
- FIX: Small fix for UIAnchor using a clipped panel container (thanks yuewah!)
- FIX: Work-around/fix-ish thing for Unity Remote sending both mouse and touch events.
- FIX: hideInactive on UIGrid should now function correctly.

[ArenMook]

2.2.4:
- NEW: SpringPanel and UICenterOnChild now have an OnFinished callback.
- NEW: UIForwardEvents now has OnScroll.
- FIX: UISavedOption now unregisters the state change delegate when disabled.
- FIX: IgnoreTimeScale clamps time delta at 1 sec maximum, fixing a long pause after returning from sleep.
- FIX: UIWidget now correctly cleans up UITextures that have been re-parented.
- FIX: Tween scripts now sample the tween immediately if the duration is 0.
- FIX: UIFont and UIAtlas MarkAsDirty() function now works correctly with a reference atlas (in the editor).

2.2.5:
- NEW: Double-clicking a sprite in the sprite selection window will now close the window.
- FIX: UIRoot will now only consider min/max clamping in automatic mode.
- FIX: Password fields should now get wrapped properly.
- FIX: MakePixelPerfect() will now preserve negatives.
- FIX: UISlider will no longer jump to 0 when clicked with the controller.

2.2.6:
- NEW: Mouse and touch events now have an option to be clipped by the panel's clipping rect, just like widgets.
- NEW: Made it possible to delete several sprites at once (Atlas Maker).
- FIX: Added proper support for Unity 4-based nested active state while maintaining backwards compatibility.

[ArenMook]

2.2.7:
- NEW: Added UICamera.stickyPress option that makes it possible for multiple objects to receive OnPress notifications from a single touch.
- NEW: UICamera.hoveredObject now works for touch events as well, and will always hold the result of the last Raycast.
- NEW: Added "Edit" buttons to all atlase and font fields, making easy to select the atlas/font for modification.
- NEW: Added Localization.Localize. Was going to change Localization.Get to be static, but didn't want to break backwards compatibility.
- FIX: Inventory example should work correctly in Unity 4.0.
- FIX: You can now set UILabel.text to null.
- FIX: UIPanel was not drawing its rect correctly in some cases.
- FIX: Assortment of tweaks and fixes submitted by Andrew Osborne (community contribution).
- FIX: Switching a mainTexture of a UITexture belonging to a clipped panel will now work properly.

[ArenMook]

(Available only to Pro users atm -- general release will follow likely on the 26th or 27th of January).

2.3.0:
- NEW: Added Premultiplied Alpha support to NGUI along with the appropriate shaders.
- NEW: Added UIButtonKeyBinding script that makes it easy to do button key bindings.
- NEW: Transform inspector now supports multi-object editing (contribution by Bardelot 'Cripple' Alexandre)
- NEW: UIRoot's 'automatic' flag is now gone, replaced by a more intuitive drop-down list.
- NEW: It's now possible to make UIRoot fixed size on mobiles, but pixel-perfect on desktops (it's an option).
- NEW: You can now specify an animation curve on all tweens.
- NEW: Added support for Unity 4.1's optimizations.
- NEW: Added UICamera.onCustomInput callback making it possible to add input form custom devices.
- NEW: Localization will now attempt to load the starting language automatically.
- FIX: Tweaks to Localization to make it easier to use. You can now just do Localization.Localize everywhere.
- FIX: UILocalize attached to a label used by input will now localize its default value instead.
- FIX: Kerning should now get saved properly. You will need to re-import your fonts.
- FIX: UICamera with multi-touch turned off should now work properly when returning from sleep.
- FIX: ActiveAnimation's onFinished callback will no longer wait for all animation states to finish (only the playing one).
- FIX: UICamera's touch detection should now work properly when returning from sleep.
- FIX: Changed the way MakePixelPerfect works a bit, hopefully fixing an issue with sprites moving by a pixel.
- FIX: UIPanel should now display the clipped rectangle correctly.
- FIX: UIInputSaved will now save on submit.
- DEL: Removed UIAnchor.depthOffset seeing as it caused more confusion than anything else. Just use an offset child GameObject.
- DEL: Deprecated hard clipping, seeing as it causes issues on too many devices.

[ArenMook]

2.3.1
- NEW: Added UICamera.touchCount.
- NEW: Added an option on the UIInput to turn on auto-correction on mobiles.
- FIX: Fixed compilation on Unity 3.
- FIX: Font inspector will now display the font in a preview window.

[ArenMook]

2.3.3 (skipped a version, 2.3.2 was only available to Pro users)
- NEW: UIPanels now have alpha for easy fading, and TweenAlpha can now tween panels.
- NEW: Added UICamera.debug mode for when you want to know what the mouse is hovering over.
- NEW: Added AnimatedColor and AnimatedAlpha scripts in case you want to animate widget color or alpha via Unity's animations.
- NEW: Android devices should now be able to support a keyboard and a controller (OUYA).
- NEW: Added UIFont.pixelSize, making it possible to have HD/UD fonts that are not a part of an atlas.
- FIX: Unity 4.1 optimization fix.
- FIX: Label shadow should now be affected by alpha using PMA shaders.
- FIX: UICheckbox.current will now work correctly for checkbox event receivers.
- FIX: UIButton series of scripts should now initialize themselves on start, not when they are used.
- FIX: TweenOrthoSize should now tween the size instead of FOV (o_O).
- FIX: Sprite selection window will now show sprites properly when the atlas is not square.
- FIX: UIAnchor should now always maintain the same Z-depth, and once again works in 3D UIs.

[ArenMook]

2.3.4:
- NEW: Added the ability to easily copy/paste widget colors in the inspector.
- FIX: Random fixes for minor issues noted on the forums.
- FIX: Minor performance improvements.

[ArenMook]

2.3.5:
- NEW: Font symbols can now have an offset for easier positioning.
- FIX: UISlider will now set the 'current' property before calling the delegate.
- FIX: Fixed the checkbox animation issue that was brought to light as a result of 2.3.4.
- FIX: Minor other tweaks, nothing important.

2.3.6
- NEW: Added a much easier way to add symbols and emoticons (select the font, you will see it).
- NEW: Added a couple of conditional warnings to the UIPanel warning of common mistakes.
- NEW: Various improvements to widget and sprite inspectors.
- FIX: There is no need to display the "symbols" option on the labels if the font doesn't have any.
- FIX: Removed the hard-coded screen height-based touch threshold on the UICamera.
- FIX: Removed the need for sliders to have a "full size" property.

[ArenMook]

2.5.0
- DEL: Deprecated Unity 3.5.4 and earlier support. If you are using 3.5.4 or earlier, DO NOT UPDATE!
- OLD: Sliced, tiled, and filled sprites have been deprecated.
- NEW: Regular sprite now has options for how the sprite is drawn.
- NEW: NGUI widgets now have visual placement handles.
- NEW: Adding a widget now automatically creates a UI hierarchy if one is not present.
- NEW: NGUI menu has been redesigned with new options and shortcut keys.
- FIX: Widget selection box now takes padding into account properly.
- FIX: Changing the pivot no longer moves the widget visually.
- FIX: Font symbols now use padding instead of inner rect for offset.
- FIX: Font symbols no longer need to be used in the editor before they are usable in-game.
- FIX: More fixes to how tweens get initialized/started.
- FIX: Re-added UISlider.fullSize property for better backwards compatibility.
- FIX: Unity 4.1-related fixes.
- FIX: Variety of other minor tweaks and changes.