Get #hashtags and @usernames from html
use HTML::SocialMedia::Hashtag;
my $scanner = HTML::SocialMedia::Hashtag -> new( text => 'text with #hashtag and @username' );
my @hashtags = $object -> hashtags();
my @usernames = $object -> usernames();
##METHODS
Get lowercased and unique hashtags from html
Get all hashtags
Get unique nicknames from html
Get all nicknames