LintError now implements Serializable interface.

This is needed for better Gradle plugin support.

CHANGELOG.md

@@ -7,7 +7,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - New `ktlint_ignore_back_ticked_identifier` EditorConfig option for `max-line-length` rule to ignore long method names inside backticks 
   (primarily used in tests) ([#1007](https://github.com/pinterest/ktlint/issues/1007))
 - Allow to add/replace loaded `.editorconfig` values via `ExperimentalParams#editorConfigOverride` ([#1016](https://github.com/pinterest/ktlint/issues/1003))
-- `ReporterProvider` now implements `Serializable` interface
+- `ReporterProvider` and `LintError` now implement `Serializable` interface
 ### Fixed
 - Incorrect indentation with multiple interfaces ([#1003](https://github.com/pinterest/ktlint/issues/1003))
 - Empty line before primary constructor is not reported and formatted-out ([#1004](https://github.com/pinterest/ktlint/issues/1004))

ktlint-core/src/main/kotlin/com/pinterest/ktlint/core/LintError.kt

@@ -1,5 +1,7 @@
 package com.pinterest.ktlint.core
 
+import java.io.Serializable
+
 /**
  * Lint error.
  *
@@ -8,7 +10,12 @@ package com.pinterest.ktlint.core
  * @param ruleId rule id (prepended with "<ruleSetId>:" in case of non-standard ruleset)
  * @param detail error message
  */
-data class LintError(val line: Int, val col: Int, val ruleId: String, val detail: String) {
+public data class LintError(
+    val line: Int,
+    val col: Int,
+    val ruleId: String,
+    val detail: String
+) : Serializable {
 
     // fixme:
     // not included in equals/hashCode for backward-compatibility with ktlint < 0.25.0
@@ -18,7 +25,7 @@ data class LintError(val line: Int, val col: Int, val ruleId: String, val detail
             field = value
         }
 
-    constructor(
+    public constructor(
         line: Int,
         col: Int,
         ruleId: String,