Fix py2/3 compatability issues in storage3.py

1.6.1

GDCDEVOPS-527 update string checks to use six.string_type/bytesio (#72)

Add boto3 client helpers to develop

Merge Joe's changes for boto3 to develop (#71)

* feat(boto3): Add storage3, update storage with pylint fixes

- Add storage3 with boto3 functionality
- Update storage with pylint fixes

* chore(pins): Add boto3 to requirements

- Add boto3 to requirements

* feat(boto3): Add msg_id as arg

- Add msg_id as arg so multithreaded apps can specify thread

* feat(storage): Add load_creds function

- Add load_creds function

* fix(storage3): Change ceph tag

- Change ceph tag

* fix(storage3): Add signature_version for ceph

- Add signature version for ceph

* fix(storage): Fix id output to pad to 3 places

- Fix id output to pad to 3 places

* chore(setup): Add .swp to .gitignore, try fix for Travis

- Add .swp to .gitignore
- Try fix for boto/Travis from
https://github.com/travis-ci/travis-ci/issues/7940

* feat(storage3): pep8 fixes, change validate default to true

- pep8 fixes
- change validate default to true

* fix(storage3): Fix handling of skip verify in boto3

- Fix handling of skip verify in boto3

* boto bump boto3 dep to latest version

* boto run futurize, black, isort

* boto remove proxy setting/unsetting sections

Co-authored-by: Joe Sislow <madopal@uchicago.edu>

1.5.0

• Make get_url more customizable to enable cross-account bucket access.

1.4.0

Support both Python 2.7 and 3.5.

Set up tox for testing against multiple Python versions.

1.3.0

Support Python 3 in settings module.

Release Ichabod

Main release for Ichabod

Versioning

Versioning release and sort_dict

Signpost -> Indexd switch

Moved from signpost to indexd