first pass at exposing ractive info for nodes as public API
keep bindings, mappings, and upstream computations from recursively marking forever
fixes #1526
Merge branch dev into gh-1217
add index name support for getNodeInfo
Merge pull request #1528 from evs-chris/gh-1526

Keep bindings, mappings, and upstream computations from recursively marking forever
Merge pull request #1509 from evs-chris/gh-1217

Expose DOM nodeRactive info in public API - RFC
fixes #1494, borrows test case from evs-chris:gh-1494
Merge pull request #1531 from ractivejs/gh-1494-b

fixes #1494, borrows test case from evs-chris:gh-1494
merge dev