Preparing build for tests and jshint.
Adding compiled version with libs.
Strong foundation for further tests.
Passing most of directed examples.
Switching to data driven tests.
Switching to PEG.js 0.8.0 and polishing dot grammar (only two left).
DOT parser passed all examples from gallery except those with unknown attributes and small issue with whitespaces and comments.
Fix of returning error position during lax parsing.
Adding XDOTs from gallery examples.
Tests for XDOT parser prepared.
Improving xdot parser.
XDOT parser passes most of gallery examples.
Adapting to PEG.js 0.8.0 with undefined predicates. Newer version of Graphviz generates colors without opacity so it must be properly handled.
Merge branch 'master' into gh-pages