Please see git for a list of changes: http://drupalcode.org/project/drush-vagrant.git/shortlog/refs/tags/7.x-2...
Changes since 7.x-1.1:
This release of Webform gets ready for the 4.0 final release! We've fixed a bunch of bugs in this release.
Upgrading is recommended for all users of the 4.x branch.
A few new minor features
Step CSS to SASS and Compass
Improved HTML5 tags
Changes since 7.x-1.4:
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