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Affects the methods "object_move" and "object_copy" of the class
"PithosRestClient" in "kamaki.clients.pithos", allowing moving and
copying of objects with unicode object or container names.

Fixes #24

Closes #10

Methods affected in kamaki.clients.pithos.rest_api.PithosRestClient:
account_head/post, container_head/put/post, object_head/get/copy/move

Refs: #2

The "service_type" of an API client is related to the endpoint URL
used to initialize the client and should match the "type" attribute
of the corresponding endpoint.

- Add optional argument --project in command "file create"
- Add command "file reassign"

Refs: #4692

Refs:#4312

Refs: #3780

Bug #3509

Some vars that have not None as default value where vulnerable to None assignments

1. Remove deprecated or unused methods dict2file, list2file, prefix_keys

2. Rename and update comments to help sphinx create better documentation

docs: replace Glance with Plankton
storage: standard sphincs-parsable comments

Requests can now distinguish between "global" headers/params
and thread-specific.