1.add check for entries[0].published_parsed and set sync_by_date() True if found
2.in sanitize(): convert unicode to ascii to prevent accented letters in filename causing problems
3.added 'entrysummary' and 'subtitle' to placeholders. These are descriptions of the entry and the feed, useful for adding to mp3 comment fields to describe the podcast
Made beautifulsoup an optional dependency.

Added htmltotext function to check if beautifulsoup module is available and use it
to convert html to text for putting into mp3 tags.
Added python-beautifulsoup4 as an optional dependency to git PKGBUILD
Merge pull request #14 from FilipBB/master

More robust last updated date check, more strict sanitize function, two new placeholders.