Dont delete source file when source file and post-processed file are the same
Allow to use relative dates in the format (now|today)[+-][0-9](day|week|month|year)(s)? (Closes #137)

Also fix DateRange not accepting ranges of one day.
Document the video selection using the upload date
Automatically set HTTPS proxy if given (Fixes #805)
Adapt tests to changes in youtube's "Most Popular" channel
release 2013.04.27
Fix print_notes
Default to --title (Fixes #499)
release 2013.04.28
Use report_warning when a not working IE will be uses
SoundcloudSetIE: Use upload_date in the unified format (fixes #812)
Remove a commented line I forgot.

[ci skip]
--proxy option
release 2013.04.30
Fix help for --proxy
Fix FakeDownloaders
Correctly clear the line before writing a new status line
release 2013.04.31
Add test for SoundcloudSet
add --write-thumbnail option to download thumbnail (Suggested by `)