[Typo3-dev] Remove .svn - Folders

[Bart Frackiewicz]

Hi list

today i released my first extension and forgot to remove the .svn-Folders. 

1) how can i remove the files (and folders) from the extension repository?
2) what is the solution to avoid this in the future?

TIA
- Bart Frackiewicz (bfrackie)

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