之前說過，Spring Cloud的版本以後要以年度計算，這次正式來了。移除了大量模組

spring-cloud-netflix-archaiusspring-cloud-netflix-concurrency-limitsspring-cloud-netflix-corespring-cloud-netflix-dependenciesspring-cloud-netflix-hystrixspring-cloud-netflix-hystrix-contractspring-cloud-netflix-hystrix-dashboardspring-cloud-netflix-hystrix-streamspring-cloud-netflix-ribbonspring-cloud-netflix-sidecarspring-cloud-netflix-turbinespring-cloud-netflix-turbine-streamspring-cloud-netflix-zuulspring-cloud-starter-netflix-archaiusspring-cloud-starter-netflix-hystrixspring-cloud-starter-netflix-hystrix-dashboardspring-cloud-starter-netflix-ribbonspring-cloud-starter-netflix-turbinespring-cloud-starter-netflix-turbine-streamspring-cloud-starter-netflix-zuulSupport for ribbon, hystrix and zuul was removed across the release train projects.

更多說明：https://github.com/spring-cloud/spring-cloud-release/wiki/Spring-Cloud-2020.0-Release-Notes