DOMParser working on Main thread

[esperpanorama]

Hi exyte,

I love your svg library! It is the best lib could find and I really appreciate that you guys made it open source.

I noticed that in the DOMParser is working on the Main thread. This is not a problem for svg files loaded from the asset catalog. However, given that one can specify any URL for a svg , this will cause the embedding app to freeze permanently in the case that the url is pointing to a web resource and the app does not have a network connection.

Keep up the great work!