0.67.0

• Fixed potential lockup with NumericPlugs.
• Fixed RenderMan ShaderMenu match expressions (broken in 0.66.0)
• Reintroduced the node name into the NodeEditor header.
• Exposed LayoutMenu submenu callable publicly.
• Implemented in-place renaming for user plugs (#213).
• Added support for RSL “parameterName.label” annotation (#372).
• Added a MapProjection node.
• Added sample window to the ImageViewer.
• Fixed UI test cases broken by the per-application menu commits.
• Can once again build for OS X.
• Added support for packaging as .dmg on OS X.