Cylon-py

- Added following steps.

feature
When user saves current page to file '...'
When user saves screenshot to file '...'
Then the [...] placeholder text is '...'

- Added following steps.

feature
When user scrolls to [...]
Then the [...] value is equal to [...] value
Then the [...] value is greater than [...] value
Then the [...] value is greater than or equal to [...] value
Then the [...] value is less than [...] value
Then the [...] value is less than or equal to [...] value

- Fixed bug for debug mode.
- Added `screenshot` mode to save screenshots when step failed.


cylon run all screenshot


NOTE: Need to run `cylon update project` command.

- Added command `cylon version`.
- Added step to repeat user steps.

feature
Given user repeat following steps '...' times
"""
...
"""

- Fixed bug in wait for element visible.
- Added click element by script step (used for some javascript element).

feature
When user clicks the [...] by script

- Added following steps.

feature
When user waits for '...' seconds
When user waits [...] appear for '...' seconds
When user waits [...] disappear for '...' seconds