Vaadin Flow Server feature

mvn:com.vaadin/flow-server/8.0.0.alpha1 mvn:com.vaadin/flow-push/8.0.0.alpha1 mvn:com.vaadin.external.atmosphere/atmosphere-runtime/2.4.30.slf4jvaadin1 mvn:org.slf4j/slf4j-api/1.7.30 mvn:javax.annotation/javax.annotation-api/1.3.2 mvn:com.vaadin.external.gwt/gwt-elemental/2.8.2.vaadin2 mvn:commons-fileupload/commons-fileupload/1.3.3 mvn:commons-io/commons-io/2.8.0 mvn:com.fasterxml.jackson.core/jackson-core/2.11.2 mvn:com.fasterxml.jackson.core/jackson-databind/2.11.2 mvn:com.fasterxml.jackson.core/jackson-annotations/2.11.2 mvn:org.jsoup/jsoup/1.12.1 mvn:com.helger/ph-css/6.1.1 mvn:com.helger/ph-commons/9.1.2 mvn:net.bytebuddy/byte-buddy/1.10.21 mvn:com.vaadin.external/gentyref/1.2.0.vaadin1 mvn:org.apache.commons/commons-compress/1.19 mvn:commons-logging/commons-logging/1.2 mvn:commons-codec/commons-codec/1.11