is needed

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

CHANGELOG.md

 # WP Migrations Changelog
 
+## [1.1.0] - 09-11-2024
+### Added
+- New method to migration classes: `is_needed()` which can return false to skip specific migration version execution.
+### Removed
+- Removed `AbstractMigration::down()` as in WordPress context it is impossible to execute down migrations reliably and the method was never actually used.
+
 ## [1.0.4] - 06-10-2023
 ### Fixed
 - Respect status returned from migration. If any error occurred (migration returned false or threw), break migration process.