v0.26.1

• Fix process request when a response already closed #550. Thanks @mamantoha 🙏
• Switch to new Ameba repository #549. Thanks @mamantoha 🙏
• Check for KEMAL_ENV variable already in Config#initialize#552. Thanks @Sija 🙏
• Cleanup Ameba warnings #551. Thanks @Sija 🙏
• Flush io buffer after each write to log #554. Thanks @mang 🙏