add some release testing plugins to dist.ini
add Dist::Zilla's .build directory to .gitignore
Merge branch 'feature/release-test-infrastructure'
add some feed files for testing
add some more feeds for testing
add 'new', 'title' and 'episode_count' methods

This is the beginning of the public API for Music::Podcatch. We're
using XML::Feed as backend for feed parsing. Many methods of
Music::Podcatch will be thin wrappers around methods from XML::Feed.

- implement 'new'. It takes the feed location as parameter. This is
  passed as is to XML::Feed->parse
- implement 'title' and 'episode_count' as wrappers around XML::Feed
- provide basic tests to see that these work
rename 'episode_count' to 'entry_count'; add docs
workaround an annoying default in XML::Atom
add more tests

- episode count can be less than entries in the feed
- ATOM feeds are parsed as unicode
Merge branch 'feature/parse-feeds' of github.com:sbober/music-podcatch into feature/parse-feeds