mYLastRSS updated to fix some bugs

Hi,

I published new release, build 20070301, which fix some bug I found while use it on labs.miaouw.net projects like Y!M Plus, Y!MobActus, and Life-Line.

Changes log:
- Fix unsupported quotes while use mb_convert_encoding() instead of iconv()
- Fix Category with CData tags
- Fix mYLR2RSS class to support media:content
- Add 'mYLR_DCDate2UnixTimeStamp' public function
- Add 'dc:date.Taken' support.
- Fix mYLR2RSS class to return right items number while made RSS-Filtering
- Fix (again) specials quotes and characters from Wordpress
- Fix categories encoding, and lowercase rendering by mYLR2RSS. Use dc:subject if not found.