ansible 2.0, library update

• added missing ansible-playbook 2.x methods
• upgraded libraries to current versions
• updated tests accordingly
• switched to php 7.2+

maintenance release

• symfony process version 3.x allowed
• travis config fixes
• configurable process timeout

Added domain specific exception

• Added domain specific exception

First stable release

Stitched together first stable version :-)

Galaxy command

• added ansible-galaxy implementation and tests

release-cleanup

• small fixes to UnitTests
• cleanup
• linked license in README
• fixed travis config

initial release

Initial implementation of the php-ansible wrapper.
Feature-complete oop-style wrapper for ansible-playbook.