Node expands for multi-line node names splitting on spaces only
Merge pull request #434 from anna2130/palette-multi-line-nodes

Node expands for multi-line node names
Add nodes to provide custom palette labels
Bump 0.9.1

Commit 1000! \o/
Refactored to reuse calculateTextWidth
Merge pull request #436 from anna2130/calculate-text-width

Refactored palette.js and view.js to reuse calculateTextWidth
Clone settings to avoid modifying original values
input labels
Fix merge error
Subflow stuff

This commit will get squashed before merging to master
Make subflows draggable and editable
Add subflow history support
Add create subflow menu option