Bandersnatch

- Change version from using pkg_resources and set it in package __init__.py.
`Fixes 98`.
- Add ability to blacklist packages to sync via conf file. `Fixes 100`.

- Add saving of JSON metadata grabbed from pypi.facebook.com for syncing `Fixes 91` - Thanks **cooperlees**
- Can be disabled via config and disabled by default
- bandersnatch symlinks WEB_ROOT/pypi/PKG_NAME/json to WEB_ROOT/json/PKG_NAME

- Fix proxy usage. A bug in the usage of requests on our XMLRPC client
caused this to break. You can now set `*_proxy` environment variables
and get them picked up properly. `Fixes 59`.
- Add a dict returned from mirror.synchronize() to show deleted
and added files from the last run
- Fix sorting of releases to use filename and not url
- Tweak atomic file writes in utils.rewrite() to prefix the temporary
file with the 'hidden' filename of the destination adding more
support for hashed POSIX filesystems like GlusterFS. - Thanks **cooperlees**

- Move to Python 3. - Thanks **cooperlees** !

Official support starts with Python 3.5 but might get away with using an
earlier version of Python 3 (maybe 3.3 or so). However, we plan to start
using Python 3.5 features (like *asyncio*) in the near future, so please
be advised that running with an older version of Python 3 is not
a supported option for the long term.

- General update of our dependencies to pave the road for Python 3 support.

- Remove residual references to the old "statistics" script that isn't in
use any longer.

- Fix return code -- we accidentally returned 1 on successful runs
as debugging code was mixed in the main call. `Fixes 67`.

- Make the package-specific simple pages human-readable again. `Fixes 71`.

- Add option to dir-hash index files. See
https://bitbucket.org/pypa/bandersnatch/pull-requests/22/add-option-to-dir-hash-index-files for a lot more information. Thanks
iwienand!

- Fix an edge case: IO errors while marking off packages as "done"
could result in crashing workers that would result in bandersnatch
getting stuck. Thanks **wjjt**!

- Brownbag release for re-upload. My train's Wifi broke while uploading
ending up with a partial file on PyPI. Can your train service do better
than mine?