As per version 1.1 of the official Twitter API system, make sure to fill the required Twitter API settings in the "Theme options > Social" tab in order for the Twitter widget and shortcode to work.
Enhancements
Added support for self hosted videos
New and improved theme customization panel (with updated skin preset)
Bug fixes
Added compatibility with the Twitter API 1.1
Fixed image resizing issue on some servers
Minor bug fixes
2.1
05 Mar, 2013
Bug fixes
Minor bug fixes
2.0
04 Feb, 2013
Major release
Some of the highlights of this release:
Completely rewritten from scratch
Developed on the new The Happy Framework v 1.0
Added responsive support
1.0.7
16 Jul, 2012
Bug fixes
Added WordPress 3.4 support
Improved Multisite support
Minor bug fixes.
1.0.6
24 Jan, 2012
Bug fixes
Minor bug fixes.
1.0.5
19 Dec, 2011
Bug fixes
Contact form sender/recipient fix.
Added the ability to install the theme to a folder named differently than "push".
1.0.4
31 Oct, 2011
Bug fixes
Logo dimensions fix
Drop down menu fix
1.0.3
24 Oct, 2011
Bug fixes
Logo upload fix
Added the ability to hide the 'Read more' button in home page
1.0.2
14 Oct, 2011
Bug fixes
Fixed contact form.
1.0.1
12 Oct, 2011
Bug fixes
Fixed a bug concerning the intended display of the sidebar, when positioned on the right
Fixed a bug that prevented images to be correctly resized