Looks like some things changed in spellcast events on 7.0 which necessitate using the spellcast GUID to identify when a specific cast starts or stops. Now we use those GUIDs which restores the castbar to its appropriate behavior. (ticket #215)
UNIT_SPELLCAST_SENT is now firing at the same time as UNIT_SPELLCAST_START which is when the client receives confirmation that a spell s/he wanted to cast has begun casting (as opposed to pre-7.0 when _SENT would fire when the client pressed the button before receiving confirmation). As per http://www.wowinterface.com/forums/showpost.php?p=314818&postcount=31, I'm now hooking CURRENT_SPELL_CAST_CHANGED to give us a slight chance of acquiring lag info. Unfortunately that event fires for just about every casting-related thing that happens (with no context/useful args at all), so we get a proper lag indicator for the initial cast, but nothing once we start chaining casts together. I guess this is something to keep an eye on as 7.0 nears release.
- reduced cpu usage by 33%-50% across the board (and more in some cases) by changing how updates are registered and how often they run. now the 'update period' slider actually matters. it defaults to 0.033 meaning that frames update about 30 times a second instead of every frame
- fixed the "always" display mode for cooldown bars to respect alpha settings (ooc/with target/in combat/etc.)
- colorized the FAQ and Module Settings description text to be more readable
- removed custom coloring from certain options that didn't match the rest
- hid a few debug-only settings
- consolidated all the 'create custom module' buttons into a drop-down + create button
- clarified description of some options so that their intent/purpose is more clear
- moved around/cleaned up headers for consistency
- doubled the width of long options so that they don't get cut off and ...'d
- the ace3 conversion also broke the dependence on Waterfall and gave a much better configuration screen through AceConfigDialog; plus Waterfall is very broken in Cataclysm and it's unclear whether anyone will bother to fix it or not
- fixed a bug with the custom CD bar when changing profiles where it would generate endless errors until a reloadui
- removed DewDrop library as it was no longer in use
- temporarily removed FuBar plugin as it doesn't work as a mixin with AceAddon-3. i will eventually be bringing this back in some form (before the next full release version)
- removed an unused 'about' button on the config page and some empty headers...not sure why they were ever there
- changed how frames are shown and hidden so we don't call show/hide unnecessarily
- widened the min/max offset numbers to allow greater placement flexibility
- 2.0 compatible
- Removed bunch of unused libs (recommended to delete your /libs folder before updating)
- Added a restriction to open configuration settings only out of combat
- TargetInfo module optimized (no longer eats your memory and babies when changing options)
- Shows up to 40 buffs/debuffs, ability to filter buffs (never/in combat/always)
- No longer uses SpellStatus lib (new events do everything worth doing)
- New module TargetCast, basically does what Blizzard target frame cast bar does
- Removed module TimerBar (it was next to useless)
- Brackets around bar texts now toggleable
- Some misc. bug fixes (eg. colors now change properly when a duel starts)
