Storj

- use `ThreadPool` to download shard
- bug fix: added `exclude` parameter to HTTP call for `file_pointers()`
- API now returns `index` parameter for `File`
- renamed keyword argument `shard_size` to `num_chunks` on `ShardManager`
- renamed `ShardManager. get_optimal_shard_parameters()` to `ShardManager. get_optimal_shard_number ()` and it now only returns the optimal shard count
- updated 3rd party dependencies
- `colorama==0.3.9`
- `Sphinx==1.6.2`

- `model.Frame`: added `storageSize` attribute
- support upload timeout to cope with slow farmers

- added do-nothing handler for `storj`: 118
- use temporary files for shards and encrypted file: 119

- `http.py`
- `frame_add_shard()`: added new keyword argument `excludes`
- `model.py`
- `Bucket`: added `index` attribute 107
- `ShardManager`: added `filesize` property
- `ShardManager`: added `tmp_path` property
- `ShardManager`:`determine_shard_size()` implementation now in sync with [aleitner/shard-size-calculator](https://github.com/aleitner/shard-size-calculator)
- `uploader.py`:
- remove shard files after upload

- added `storj.uploader`

- `http.py`:
- added `timeout` attribute to `Client`: 103