New modules

[GMartigny]

In a recent blog post, Chrome developers annonce a lots of new API and options available to the Canvas. All these options should be supported by Pencil.js, here a quick list :

• Round rect (This is not a new module, but an addition to Rectangle options)
• Conic Gradient
• Text modifiers (This is not a new module, but an addition to Text options)
• Filters ? (not sure about this one)

[GMartigny]

Round rectangle fixed by 7a5b425 (v3.1.0)