Post #406: 
New features:
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Adding button’s command to pie menus using RMB context menu
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Adding panels to popup dialogs in interactive mode
Update instructions:
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Backup your pie menus using Export button.
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Open User Preferences (ctrl+alt+U).
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Go to the Add-Ons tab.
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Click ‘Install from File’ button, navigate to the file you downloaded and install it.
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Restart blender.