stream has methods take, flat
add destroy method to flat stream
add simple description about jef.stream
update description
new dev dependencies
add domdiff.js with test
implementation and test of nodeRetrievePath
implementation and test of nodeRetrievePath
nodePosition tests
refactoring
update return policy
update method names
update method names
ddiff test
fix diff implementation and test
add domdiff example
add new demo link