Added full_urls attribute to arc_twitter and ability to display expand (non-t.co) URLs.
Tidied makeLinks method.
Made Twitter user links more consist in appearance with Twitter.
Enabled ability to toggle between full and t.co URLs in arc_twitter tag.
Updated gitignore file.
Added full URL display support to arc_twitter_search.
Updated help text.
Updated the arc_twitter tab to use the new URLs.
Updated JS character count on Twitter tab to take into account t.co URLs.
Updated PHP character count on Twitter tab to take into account t.co URLs.
Updated the article link tweet method to count URL according to t.co rules.
Added 'do not shorten' option for URL shortening.
Updated the plugin version to 4.2.
Bug fix.