BUGFIX: __toString must not throw an exception

Merge pull request #6 from daniellienert/bugfix/no-exception-in-tostring

BUGFIX: __toString must not throw an exception

v2.0.8: BUGFIX: Trim dummy image texts to avoid url-erros with single space a…

…rguments

v2.0.7: Merge pull request #5 from sitegeist/svg-assets

BUGFIX: Add fallback to UriImageSourceHelper for SVG images

v2.0.6: Merge pull request #4 from beardcoder/master

FIX: Correct naming

Apply width and height correctly via fusion

BUGFIX: Image sources apply width and height definitions correctly in…

… Fusion

v2.0.4

BUGFIX: Remove var_dump

Handle altered handling of setWidth and setHeight during scaling properly

BUGFIX: Handle altered handling of setWidth and setHeight during scal…

…ing properly

Eel modifications to imageSources return new objects instead of cloning.

BUGFIX: setWidth and setHeight and applyPreset return an altered copy…

… instead of modifying the imageSource

This is necessary to render the same imageSource in different crops.

Fix dummy image border rendering with GD

Merge pull request #3 from sitegeist/task/renderBorderAlsoWithGd

TASK: Render border with GD

Use single `srcset` with array or comma list of media-descriptors

The srcsetprop accepts an array or commy separated string of descriptors like1.2xor800w width, resolutions, widthSrcset()andresolutionSrcset()` were remove in favor of that.