added new mapping version key

Author: hauner

src/main/kotlin/com/github/hauner/openapi/core/processor/mapping/v2/Mapping.kt

@@ -16,6 +16,7 @@
 
 package com.github.hauner.openapi.core.processor.mapping.v2
 
+import com.fasterxml.jackson.annotation.JsonAlias
 import com.fasterxml.jackson.annotation.JsonProperty
 import com.github.hauner.openapi.core.processor.mapping.VersionedMapping
 
@@ -29,7 +30,9 @@ data class Mapping(
         /**
      * mapping format version
      */
-    @JsonProperty("openapi-processor-spring") val version: String,
+    @JsonProperty("openapi-processor-mapping")
+    @JsonAlias("openapi-processor-spring") // deprecated
+    val version: String,
 
         /**
      * general options

src/main/kotlin/com/github/hauner/openapi/core/processor/mapping/version/Mapping.kt

@@ -16,9 +16,13 @@
 
 package com.github.hauner.openapi.core.processor.mapping.version
 
+import com.fasterxml.jackson.annotation.JsonAlias
 import com.fasterxml.jackson.annotation.JsonProperty
 
-data class Mapping(@JsonProperty("openapi-processor-spring") val version: String?) {
+data class Mapping(
+        @JsonProperty("openapi-processor-mapping")
+        @JsonAlias("openapi-processor-spring") // deprecated
+        val version: String?) {
 
     fun isV2(): Boolean {
         if (version == null) {