v1.2.0

• add offset() method.
• add limit() method.
• add copy() method.
• add except() method.
• add nth() method.
• add offsetGet() method.
• add offsetSet() method.
• add offsetExists() method.
• add offsetUnset() method.
• add getIterator() method.
• add protected getArray() method.
• add phpstan.neon config file.
• implement ArrayAccess, ArrayIntegrator, Countable, IneratrorAggregate, Traversable.
• improve create() method, add ability to path not only arrays inside.
• improve flush() method - return self instead of void
• improve filter() method - add ability to set $flag, default is ARRAY_FILTER_USE_BOTH
• improve set() method. add ability to set $key as null.
• fix issue for get() method in cace if $key type is int provided.
• fix php doc sesction for all methods.
• fix return result for delete() method if count($keys) === 0
• fix combine() method error with not accept array|false.
• fix toString() method when result $string is null we should return empty string instead of null.