The paid version (1.5.6) of Vanilla Botter is finally out now.
A more-or-less full list of improvements compared to 1.2.8:

Changelog:

• Added Updater
• Remote Control functions added
• Bot runs a lot more efficient/stable in general
• Bot retaliates attacking players
• Warning sounds on whispers and /say
• Improved movement
• Background looting
• Bot shouldn't kill your processes while relogging anymore
• Sharable combat profiles
• Skinning option to enable/disable it
• Removed mountkeys, bot detects your mount automatically
• Bot doesnt try to loot mobs of other players anymore
• Bot won't try to mount in water
• Bot will no longer wander too far off your waypoints
• Bot will not jump anymore just after looting as this was making it obvious that you were botting
• "incombat" works properly
• The key-modifiers of the actionbar-bindings can now be changed (i.e. you can use CTRL instead of shift or use a regular key)
• New combat profile commands/conditions:
  
• "Use:" for items such as food, drinks and scrolls
  
• "!wandcasting" as condition for whether you are casting wand or not (also works for hunter's autoshoot)
  
• "!autoattacking" as condition for whether you are auto attacking
  
• "haveitem>Xtrigger:Y" as a condition-trigger for whether you have an item in the cast-slot (useful for mages for conjuring)
  
• "castspell:" as a new way to cast, makes profiles sharable without having to set up your GUI (this takes multiple ids for different ranks)
  
• buffconditions can now check for multiple buff ids at once of which only one has to be true (different ranks of spells)
  
• "level" conditions to check your own level
  
• "breakonkill" condition to break channelingtimes if your target dies

Hotfix: incombat-condition works on emerald dream again

1.5.7:

• Improved efficiency of resource gathering mode

1.5.8:

• Single processes can now be run with 'Run [PID]'
• Rewritten gathering routines
• Players can be ignored for paranoia mode with 'IgnorePlayer [PID]' (you have to target the player)
• Normal waypoints should follow ghost waypoints if the corpse hasn't been found on the way
• Running ghost waypoints should now be started at the closest one, not the first one
• Bot will now stop to cast if he runs and casting fails because of that
• Attempted a fix on the updater freezing (for future versions)

Added a little tool to convert glider farming profiles to Vanilla Botter profiles to the download section

Hotfix:

• Gathering & Mounting ought to work fine now
• When running to your corpse your character shouldn't run into nowhere anymore

1.5.9:

• Hunters backpeddling is now depending on enemies size
• Some changes in ghost mode that should fix some bugs (not finding the corpse)
• Waypoint recording distance can now be changed with 'RecordDistance [DIST]'
• Added a 'nogcd' option for casts that will make the cast not trigger the global cooldown (i.e. for auto attack or cooldown abilities)
• Skinning will be reattempted once if it fails

Actually there was so much more that I wanted to put in this patch but I wasn't able to finish it... Anyway, it will have to come later then. The changes for this patch...

1.6.0:

• The bot shouldn't have issues with not doing anything when the server is slow anymore
• The bot will no longer attempt to drink/eat in water, also it should resolve facing issues by itself now when in water
• Click To Move will now properly be turned off when stopped via RC
• New conditions: !mainhandbuffed and !offhandbuffed which show the buff-state of your weapon (shamans, rogues)
• New condition: haveitem:[ID]>[COUNT] will make it now able to check for an item in your inventory as a condition (i.e. warlocks soul shard)
• New condition: !enemycasting to check whether your target is casting a spell
• The bot will now check by itself whether he has enough mana/rage/energy for a spell, the conditions will still stay
• Mobs tagged by other players who try to prove that you are a bot will now be swapped if possible (only if you don't have aggro)
• If in water, the bot will now try to prevent drowning
• The loot count also counts gathering and fishing now
• If profile paths are not circular the path will now be run in reverse after the last waypoint, this should make most glider profiles work better
• While creating a farming profile you can walk to your waypoints using the GotoWaypoint [#] ([ghost]) command
• With the DeleteWaypoint [(ghost)] command you can now delete the closest waypoint of your farming profile
• Hunters can now log off automatically when out of ammo
• Lifetime stats for your characters will now be recorded, in addition to that the experience gain is now recorded
• If the bot can't find your corpse on the waypoint path after 10 minutes it will attempt to go to the corpse directly from the closest waypoint
• The bot will no longer try to retaliate against players that are more than 5 levels higher than you are
• The logs are now timestamped
• /yell's are now being noticed for warning sounds as well
• Any whisper/say/yell will be logged now
• Fixed paranoia mode

1.6.1:

• Non-combat actions are now properly performed again
• Hunters will no longer make the bot crash on backpeddling
• Waypoints after killing/looting will now be chosen with smarter checks

Attempted a fix on the current issues with the bot (shutting down etc.) though I am not able to tell whether this solved the issue. Please tell me if you still have problems from now on...

Fix:

• Random shutdowns should no longer occur
• Vanilla Botter works properly on Windows 8 now
• Fishing is way more reliable now (still not working in background, though)