Fixing StructuredText.getFirstImage(), fixes #32
Support for asText for all fragments and Doc
Merge pull request #33 rudyrigot/getfirstimage

Fixing StructuredText.getFirstImage(), fixes #32
test: remove dates for 'Render a document to Text'

This changes prevent failures dues to different
timezone.
Merge pull request #34 rudyrigot/astext

Support for asText for all fragments and Doc