reactive streams support branch

Author: bbakerman

build.gradle

@@ -34,7 +34,7 @@ if (JavaVersion.current() != JavaVersion.VERSION_1_8) {
 
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
-def slf4jVersion = '1.7.30'
+
 def releaseVersion = System.env.RELEASE_VERSION
 version = releaseVersion ? releaseVersion : getDevelopmentVersion()
 group = 'com.graphql-java'
@@ -68,11 +68,17 @@ jar {
     }
 }
 
+def slf4jVersion = '1.7.30'
+def reactiveStreamsVersion = '1.0.3'
+
 dependencies {
     api 'org.slf4j:slf4j-api:' + slf4jVersion
+    api 'org.reactivestreams:reactive-streams:' + reactiveStreamsVersion
+
     testImplementation 'org.slf4j:slf4j-simple:' + slf4jVersion
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.awaitility:awaitility:2.0.0'
+    testImplementation 'io.projectreactor:reactor-core:3.6.6'
     testImplementation 'com.github.ben-manes.caffeine:caffeine:2.9.0'
 }