v1.0.0-alpha.4

• Bubble
  • 🆕 Bubble support variant props, by @zombieJ #140
  • 🆕 Bubble support shape props, by @zombieJ #144
  • 🆕 Bubble support header and footer props, by @zombieJ #147
• Sender
  • 🆕 Sender support speech, by @zombieJ #154
  • 🆕 Sender support Sender.Header, by @zombieJ #156
  • 🆕 Sender style adjust, by @zombieJ #151
• 📖 update group config for Components category, by @YumoImer #155
• 📖 tweak demo toggle button style , by @afc163 #146
• 📖 Update README.md, by @afc163 #142