Begin allowing guest voting
Refactor: introduce visitor classes
Guest voting works
only proceed if user is logged in
Fix a bug in class name
Use get_user_option instead of get_author_meta
Delete version DB option on uninstall
check permissions before deactivating plugin
only set visitor object if it doesn't exist
add filter for negative comment weight
child class can define type
Merge pull request #80 from humanmade/issue-80

Allow anonymous voting