Whiteboard -Cont. for BC-

2.7.3
Support for patch 4.1
Fixed a problem with saving images showing erased symbols
Reduced message size on network

2.7.2b-
fixed major issue that prevented the add-on from working properly

2.7.2-
Support for ver 4.0.1
Minor Usability Enhancements

2.7.1-
Fixed the "Send Request" feature to be received from any channels as was intended

2.7-
NOTE: ver 2.7 is not compatible with 2.6, everyone should update or errors would come up

improved interface
drawing area is now bigger and removed background
added all 8 raid icons
fixed a bug when deleting an icon/symbol when no lines were drawn at all
fixed a permissions bug
added a session request message, to tell people on the selected channel to open whiteboard

2.6-
Project is now developed by Ehab Amer "Waheiba"
added feature to draw symbols (currently an X) on clicks aside from drawing lines (works in save/load also)
added raid permissions, only raid leader and assistants can change the image drawn in a raid channel.
Add-on starts hidden, type /wb or /whiteboard to show it.

None found in my tests, please let me know if you find one!