Convert DdeboerDataImportBundle to stand-alone library
Fix normalizer for Windows (CRLF) line-breaks
Add convert encoding filter
Add stream adapter
Fix CS
Rename source classes for consistency
Add string source (fixes #17)
Add phpdoc
Add fseek
Create a Tempfile object.
[Bugfix] The HttpSource ignores $context

Currently the HTTP Basic authenticated in HttpSource is broken, because the method ignore's `$context`.
Update ConvertEncoding.php

Convert encoding only if given content isn't already in the right encoding