Revert "Combine play and write into one step (#39)" because it causes…

… the issue with shaper play (#44) (#45)

This reverts commit 6e37ec4.

Add long description

Add output argument to shaper play and change python3 default behavio…

…r when no arguments are provided

Add output argument to shaper play and change python3 default behavior when no arguments are provided

Fix README

Fix jinja empty string (#33)

* fix test cases

* fix yml multiline dump and load

* fix .properties multiline

* change multiline whitespases

* fix expected_out.yml

* code review changes

* python3.7 generator fix

* fix jinja empty string and style improvements

Python37 fix (#29)

* fix test cases

* fix yml multiline dump and load

* fix .properties multiline

* change multiline whitespases

* fix expected_out.yml

* code review changes

* python3.7 generator fix

Fix multiline (#27)

* fix test cases

* fix yml multiline dump and load

* fix .properties multiline

* change multiline whitespases

* fix expected_out.yml

* code review changes

add tests for manager (#24)

* add tests for manager

* add functional tests for shaper

* update tests and add warning for using pure dicts in python2

* fix tests for manager.py

* update gitignore

* compare only file internals in tests

Fix parsers (#23)

* fix yaml and json parsing

* use pytest instead of nose

* refactor tests structure

* update requirements

* fix linter

* update tests

* Add function tests

* backward compatibility with python2

* Add function tests assets

* Add diff for write step

* Add write check

* my tears and sorrow

* my eyes will never be the same

Merge pull request #22 from arno49/grand_refactoring

Grand refactoring