0.9.0

Minor Changes

• Bump @wordpress/eslint-plugin from 2.2.0 to 2.3.0: #36
• Bump @wordpress/scripts from 3.2.1 to 3.3.0: #37
• Bump johnbillion/extended-cpts from 4.2.3 to 4.2.5: #38, #44
• Bump commerceguys/addressing from 1.0.4 to 1.0.5: #43
• Update package scope: 6ac1d91
• Add participants button and program button (fix #39, fix #40): #45