Features:
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- You can now set whether users are allowed to attach files
- Added a checkbox to the forum form where users can select 
  whether the edited by thing should be added
- If you edit an edited post the edited by line will be removed 

Installation:
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- Upload all files in your newbb folder
- CHMOD cache/attachments 777
- run yoursite/modules/newbb/_update/_update.php
- delete the /modules/newbb/_update folder
- adjust your settings in newbb configuration