Release 2.4.1

Updating test requirements.

Release 2.4.0

Updating for php 7.2+

Release 2.3.0

Updating code style to conform with more modern twig class names.

Release 2.2.0

Updated tests and twig version testing.

Release 2.1.0

Adding support for php 7.1

Release 2.0.1

Adding in php version requirements to match twig 2.0.

Release 2.0.0

Version 2.0.0 for twig 2.*.

Release 1.0.1

Including bug-fix for single quotes within markdown.

Release 1.0.0

Updating readme.