v0.4.0-rc5

🐛 Bug fixes

• 83aeccd (autok3s) fix build docker images tag
• c78d7df (api) gracefully exit ssh/kubectl terminal
• 3b15086 (autok3s) fix pprof url path error
• f135cdd (autok3s) set WITHOUT_MANIFEST to false
• 1374430 (api) fix invalid error message
• 9a6ccd6 (autok3s) fix command flags check function
• 6e1e7ce (aws provider) cancel unfulfilled spot instance at rollback
• ad53f77 (autok3s) support change window size for kubectl/ssh websocket
• f4184bd (autok3s) cross-build for Darwin is not supported

📦 Other

• cae68d7 (autok3s) update docs and flag descriptions for providers