Version 1, Update 5

New:

• The figma.ui.on('message'), figma.on('selectionchange') and figma.on('currentpagechange') APIs, which were previously proposed APIs can now be used in published plugins.
• A new figma.on('close') API for allowing you to run shutdown actions when the plugin closes.

Proposed API (how do they work?):

• An optional position option in figma.showUI() with possible values 'default' | 'last' | 'auto'