Remove not used Setting.form
Ignore /bin which only contains artifacts
Update twitter4j gem to 3.0.3
Make Data.twitter private

Limit setting Data.twitter.
Get it with getTwitter() method.
Show dialog message when a browser did not launched.
Update rest length counter when the text content changes

KeyPressed event does not update the length when text is added via Japanese IME.
Wathing the content works well with IME.
Detect whether ctrl is pressed via getModifiers()
Remove a redundant instance field
Fix authentication exception in load
Do not remove text until posting succeeds
Merge pull request #1 from tomykaira/update_and_usability

Twitter4j のアップデートによる 1.1 への対応と、使い勝手の向上