Merge pull request #69 from kostajh/develop

Add readme for experimental mode
Update AUTHORS section of the README re @kostajh.
Be more careful with this header dict.
Loosen version constraint on python-requests.

Fixes #70.
Merge pull request #71 from ralphbean/feature/modern-requests

Feature/modern requests
0.6.0
Merge branch 'release/0.6.0' into develop
Use permalink for subtasks if provided