Started ext-clones
clones: node.clonesFind() returns list of nodes (not keys)
getNodesByRef()
Neue Funktion node.isClone(). Fixed refKey map für nocht-clones
Fixed clone list length
Merged latest changes from master
[ext-clones] new extension that introduces `refKey`, which may occur     multiple times in one tree
[ext-clones] highlight original node if a clone is created
Merge branch 'master' into clones

Conflicts:
        CHANGELOG.md
	demo/sample-ext-persist.html
	src/jquery.fancytree.persist.js
	test/test-ext-table.html
[ext-clones] New option highlightActiveClones
Merge remote-tracking branch 'origin/master' into clones
Added FNV-1a and MurmurHash3
Fixed sample-select
merged from master
added defaultKey callback and reproducible unique keys
removed re-order debugging
lazy load throws error if autoscroll: true and result is empty

closed #163
renamed triage template and removed stale sample
Optional parameter `noEvents` for node.setActive() and .setExpanded()

closed #162
Added 'fork me' ribbon