is needed

• chore: remove composer.lock from commited files
• feat: add support for conditional execution of migrations
• chore: phpstan errors fixes
• chore: add changelog

src/AbstractMigration.php

@@ -20,5 +20,12 @@ abstract class AbstractMigration {
 
 	abstract public function up(): bool;
 
-	public function down(): void {}
+	/**
+	 * Allow to skip migration if it is not needed. Tracking of migration version just by wp_options
+	 * value may be subject to random issues, so as a backup, this method can be used to avoid
+	 * errornous migrations like creating alredy exising columns.
+	 */
+	public function is_needed(): bool {
+		return true;
+	}
 }