Update version to 4.0.0-SNAPSHOT for Release

Author: JaidenAshmore

build.gradle.kts

@@ -12,7 +12,7 @@ plugins {
 
 allprojects {
     group = "com.jashmore"
-    version = "4.0.0-M9-SNAPSHOT"
+    version = "4.0.0-SNAPSHOT"
 
     repositories {
         mavenCentral()
@@ -187,4 +187,4 @@ tasks.register("saveVersionForGitHub") {
     doLast {
         println("::set-output name=version::${project.version}")
     }
-}
+}