A very simple addon that calculates the kills, quests and battles required to reach your next level.

Features

• After each kill, quest or battleground, the exact amount required of that particular mob, quest or battleground is displayed in the floating error-message window, and optionally in the default chat window.
  
• A small window displaying the average amount of kills, quests and battlegrounds required, based on your previous data.
  
• A highly configurable LDB data-source, providing data to LDB front-end addons, such as TitanPanel and Fortress.
  
• Hunters can see the amount of kills required for their pets to gain a level.
  
• Optionally, the amount of battleground objectives needed can be displayed.
  

All of these display features can be configured via the configuration window, which is
accessible by either right-clicking the average window or typing the commands: /xtl or /xtolevel

Language support
The addon supports English, French, German and Spanish.

Note that the translations for Spanish and French may not be entirely correct.
I speak neither of them, so I just used the Google translator to translate the phrases.
You can edit the translations by editing a locale's respective file under the "locale" directory.

Thanks to Marcel and Axel for their help with the German translation!

Custom LDB Text Patterns
With version 3.2.0_5r you can now create custom patterns for the LDB text output.

This is done by opening the config window, selecting the LDB tab and choosing "Custom" from the Pattern drop-down. Then the text-box will be enabled for you to enter you pattern.

In short, you can use HTML-like tags to represent the available data:
- kills, quests, bgs (battles), bgo (bg objectives), xp, pet, petxp

For example, you could do:

- K: <kills> Q: <quests> XP: <xp>

= K: 100 Q: 10 XP: 90%

For full details on how to construct a custom pattern, see the "customPatterns.txt" file that comes with the addon.