Add convenient Stream::getDimensions method to extract video dimension.
Break if dimension is found
Merge pull request #56 from alchemy-fr/streams-dimensions

Add convenient Stream::getDimensions method to extract video dimension.
Inject Video at Frame construction
Apply frame filters on Frame::save
Add DisplayRatioFixer Frame filter
Fix FiltersCollection::getIterator in case of empty collection
Add FrameFilters::fixDisplayRatio method
Merge pull request #57 from alchemy-fr/frame-display-ratio-fixer

Add frame display ratio fixer filter
Merge branch '0.3'

Conflicts:
	CHANGELOG.md