Mozdownload

* Workaround for downloading files via ftp-origin-scl3.mozilla.org (329)

* Improve API and documentation (324)
* Create Factory class for various Scraper instances (320)
* Switch from optparse to argparse (318)
* Move CLI into its own module (316)
* test_direct_scraper.py should make use of local http server (214)
* Add instructions for contribution (310)
* Enhance documentation for developers (307)

* Remove dependency for mozlog (304)
* Replace ftp.mozilla.org with archive.mozilla.org (302)
* Removed all unused variables from get_build_info_for_version (169)
* Adapt to mozlog 3.0 (300)
* Re-add scraper.cli to __init__.py (298)

* Remove support for Python 2.6 (250)
* Enhance Travis CI job with more validity checks (157)
* Add support for downloading Fennec (Firefox Mobile) daily builds (292)
* Update dependencies for python packages for test environment (293)
* Add waffle.io badge to README
* Remove support for unsigned candidate builds (108)

* Daily Scraper: Limit Check for non-empty build dirs (255)
* Use -stub suffix for release and candidate builds (167)
* Upgrade dependency for requests module to 2.7.0 (271)
* Ensure that --destination is always using an absolute path (267)
* Test for correct choice of scraper (257)
* Ensure to close the HTTP connection also in case of failures (275)
* Close HTTP connections after traversing directories on ftp.mozilla.org (272)

* Allow download of files with specified extension for Tinderbox builds on Windows (264)
* Replace --directory option with --destination to allow a filename for the target file (92)
* Always show correct build number for candidate builds (232)
* Add test for invalid branches of daily builds (236)
* `mac` platform option for tinderbox builds should default to `macosx64` (215)
* Reverse check for non-empty tinderbox build directories (253)