* This commit squashes ~100 commits by @caseyrygt. Selected commit
   messages:
   * upgraded to python 3.5
   * metadata: returns 400 as well when new file does not exist;
   * updated OneDrive for v1: add can_duplicate_names method to
     providers  Related: [#OSF-5226]
   * fixed exception when renaming a folder; child data does not appear
     to be needed either when intra_move is called on a folder
   * onedrive copy call successful but need to wire up async handler to
     get status
   * implement revalidate_path to support Download as Zip
   * added resp.release() to methods that did not call .json() so
     connections are released;
   * added await asycio.sleep(4) so that the copy process will check for
     a status update for up to 90 seconds before giving up.
   * Added OneDrive API links as docstrings.
   * Fix my math; WB will poll OneDrive every 5 seconds for up to 18
     times (90 seconds)
   * intra_copy: move iteration and sleep intervals to settings file;
   * added OneDrivePath class to encapsulate file path handling with
     OneDrive.
   * fix downloads of text files by disabling encoding from onedrive
     server
   * added error message if onedrive is being slow on copy

 * If the resource root is not the same as the provider root, then we
   need to do some extra validation to make sure the user isn't
   requesting a file outside the configured resource root.  OneDrive
   doesn't give us the parent pieces all at once, so we need to fetch
   the resource root and compare it to the path data.

   Assuming the request is valid, we need to take care to construct a
   proper OneDrivePath object, where the first path part is named ''
   and has the resource_root id, and all the remain parts are children
   of it.

 * add documentation, tests, test fixtures

 * standardize logging