Bump version & update setup.py

Fixed CI & added Python 3.7

* Fixed Travis CI build

* Updated zstd test binary blob

* Added: Python 3.7

* Fixed: change type of "information" for RAR

* Added: test the guesser alone to get better error message

* Increase major and update dependency

Bumped to version 4.1.1

Previous version has been upload with a print() in the code.

Bumped to version 4.1.0

Release 4.0.1

Release 4.0

Fixed: prevent running from tty

Clean-up: renamed library to destream

Fixed: missing dependency

Release 2.0