Added img tag in allowed tags in bleach

<img> tag in some responses was not being rendered because it was sanitized/escaped by bleach so now it is added to allowed tags so it can render properly

More Python 3 fixes

Merge pull request #51 from edx/diana/handle-input

Handle case when we don't have to turn body into a bytestring.

Another python 3 fix

Handles a case where we may or may not have a bytestring.

v1.2.1: Merge pull request #49 from edx/waheed/PROD-774-upgrade-to-py3

Upgrade to pyhton 3.

v1.1.8

• Adds context_title and context_label to the message parameters.
• Adds some documentation on testing.
• Adds some requirements necessary for running tests.

Release EDUCATOR-2273 Bug Fix

Due to a chrome update some of our LTI blocks are broken in chrome. See documentation here: https://dev.chromium.org/Home/chromium-security/deprecating-permissions-in-cross-origin-iframes

Release EDUCATOR-1218 Bug fix.

Bug fix related to encoding.

Release EDUCATOR-945 bug fix

Merge pull request #33 from edx/cahrens-patch-1

Bump version

bump up version

Making LTI Xblock behave as a Django App

Configure editing of LTI fields

v1.1.3

bump up the version