Up the version to 1.2.0 development
Initial downloader implementation
Tests for the downloader
Translation for downloader error
Return the value of the yielded block in Busy
Download boxes using CURL!
Remove downloaders, no longer needed
Setup file protocol if adding a box from a file
Properly accumulate and parse cURL output for progress
Fix cURL parsing with invalid blanks
Respect the "disabled" flag for shared folders for VirtualBox [GH-1004]
Update CHANGELOG for cURL stuff