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
1.3.9
10 Dec, 2012
Bug fixes
Minor bug fixes
Fix child theme support
1.3.8
11 Sep, 2012
Bug fixes
Fixed a bug with the page sidebar.
1.3.7
16 Jul, 2012
Bug fixes
Added WordPress 3.4 support
Improved Multisite support
Minor bug fixes
1.3.6
08 Jun, 2012
Bug fixes
Minor bug fixes.
1.3.5
24 Oct, 2011
Bug fixes
Fixed sticky posts on home page
Added the ability to hide the 'Read more' button in home page
1.3.4
14 Oct, 2011
Bug fixes
Fixed contact form
1.3.3
12 Oct, 2011
Bug fixes
Added support for the gallery shortcode to be displayed inline
Fixed a bug that displayed the site's title twice
Fixed a bug that prevented images to be correctly resized
1.3.2
12 Sep, 2011
Bug fixes
Minor bug fixes and framework improvements.
1.3.1
06 Sep, 2011
Bug fixes
Fixed tab and accordion widget in sidebar.
Enhancements
Added support for html and shortcodes into front page intro text custom field.
1.3
30 Aug, 2011
Bug fixes
Fixed pagination issue in the front page.
Enhancements
Various home page improvements.
Improved translation support.
New features
Major admin panel refresh, now more powerful and intuitive.
Added Google+ profile link capability.
New "Services" widget.
New "Testimonials" page template.
1.2
05 Aug, 2011
Bug fixes
Fixed potential vulnerability issue in TimThumb
Fixed a bug generated by WP_PageNavi on the standard homepage
Fixed some compatibility issues between Fancybox and NextGEN Gallery
Enhancements
Added the ability to disable Fancybox functionality
Added native menu location support
Better translation support
New features
The "Testimonials" widget now has support for random ordering
Added a new Slideshow mode, with the ability to choose from blog posts or works thumbnails also
1.1.1
29 Jul, 2011
Bug fixes
Fixed an image bug on blog template
Enhancements
Added support for image caption and alignment
Added the ability to enable the sidebar on standard wordpress homepage
1.1
26 Jul, 2011
Bug fixes
Added compatibility with the Contact Form 7 plugin
The mail associated to the contact form has been fixed
Fix for the news widget: now two or more news widgets can coexist in the same page
Fixed the display for the social widget
Enhancements
You can now have the home page slideshow to display without activating the Custom Layout feature
Improved sidebar management
Revised and improved admin panel
Added template flexibility in case the sidebar is disabled or empty
New features
'Latest works' widget
Portfolio-style blog template
4 new sidebars
When using the 'Page With Right sidebar' or 'Page With Left sidebar' templates you can now choose which sidebar to display when editing the page