v1.1.1

• Validates requested generator against list of supported options.
• Fixes invalid hash index in concentric_circles and nested_squares.

v1.1.0

Simplifies using patterns as a background image with the uri_image method.

<div style="background-image: <%=pattern.uri_image%>"></div>

v1.0.0

This release will be used for a couple of GitHub projects, thus the 1.0.0 version.