Moler

Added
* Possibility to forget device
* Change number of retry whe terminal not operable yet

Fixed
* fix calculating timeout of sudo command

Added
* new UNIX command handled by moler: **gzip**
* skip asyncio test under python 2 (internal CI of moler)

Fixed
* wrong processing of chunked lines by textual events
* sudo command incorrectly handling result of sudo-embedded command

Added
* improved documentation generation

Added
* first official release of Moler