Remove opacity values

Opacity values were preventing multimers from working.

Main cy branch integration

3.0.0

3.0.0

Multimer

Minor

• add multimer support
• minor label size adjustment changes

Fix zero width / height complex nodes

2.0.1

2.0.1

2.0.0

Major

• main export is a stylesheet instead of a modified cytoscape instance
• requires cytoscape 3.2 (future release) as a peer dependency
• uses multiple svg images to render aux. items

Minor

• text outline makes it easier to read text
• memoize to improve drawing performance

Bugfixes

• fixes bug that caused firefox to render svg images incorrectly

Multi-img

• uses two new cytoscape shapes (barrel and cut corner rectangle)
• uses multiple svg images for complex and compartment nodes

initial release

Renders sbgn shapes using svg background images for cytoscape.js