updated dependencies: n3, levelgraph, concat-stream, readable-stream
updated devDependencies: mocha, chai, level-test, coveralls, istanbul, browserify, uglify-js
updated browsers ranges in .zuul.yml
updated builds
Pass all needed whitespace to parser.

Newlines got stripped off,
resulting in an incorrect Turtle document
and thus (correctly) a parser error.
updated bower.json
added CHANGELOG.md
Merge pull request #13 from mcollina/deps

0.4 updated dependencies