fix for Bug #715687 (Consider host_whitelist and whitelist_tags before deleting element)
slightly extended documentation
Merge pull request #115 from cko/Bug715687

fix for Bug #715687
changelog
fix careful javascript exclusion in cleaner
Merge pull request #116 from cko/doco2

slightly extended documentation
safely report IOErrors even in the face of unexpectedly encoded file names

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extra : rebase_source : e19f5f1b11ba54126f147b2a67110b2d9b66754d