Enabled automated changelog

Shipkit Auto Version plugin allows to use version from annotated tag.
As the plugin provides information about 'previous' version,
applying it instead of axion plugin enables automated changelog.
Mockito-Kotlin does not use any prefix for tags so it is required to add
'version.properties' file with empty 'tagPrefix' property.

Author: shestee

build.gradle

@@ -5,31 +5,22 @@ buildscript {
     }
     dependencies {
         classpath "org.shipkit:shipkit-changelog:1.1.13"
-        classpath "pl.allegro.tech.build:axion-release-plugin:1.13.0"
+        classpath "org.shipkit:shipkit-auto-version:1.1.11"
         classpath "io.github.gradle-nexus:publish-plugin:1.0.0"
     }
 }
 
 apply plugin: "io.github.gradle-nexus.publish-plugin"
+apply plugin: 'org.shipkit.shipkit-auto-version'
 apply plugin: "org.shipkit.shipkit-changelog"
 apply plugin: "org.shipkit.shipkit-github-release"
-apply plugin: "pl.allegro.tech.build.axion-release"
-
-scmVersion {
-    tag {
-        prefix = ''
-    }
-}
 
 allprojects {
     group = 'org.mockito.kotlin'
-    version = scmVersion.version
 }
 
-println "Building version $version"
-
 tasks.named("generateChangelog") {
-    previousRevision = scmVersion.previousVersion
+    previousRevision = project.ext.'shipkit-auto-version.previous-version'
     githubToken = System.getenv("GITHUB_TOKEN")
     repository = "mockito/mockito-kotlin"
     releaseTag = project.version

version.properties

@@ -0,0 +1 @@
+tagPrefix=