2.5.0

• added support for Symfony 4

2.4.0

• added some command line arguments

2.3.0

add timout option

2.2.1

• fix add dont-crawl-external-urls option

2.2.0

• add dont-crawl-external-urls option

2.1.1

• append urls to log file instead of overwriting entire file

2.1.0

Added an option to write the non-2xx and non-3xx responses to an output file

2.0.0

• improve speed by crawling links concurrently
• show on which url a broken link was found

1.0.2

• add support for Symfony 3

1.0.1

• Lower requirements to php 5.5