You can see the changelog inside readme.txt
== Changelog ==
= 1.4.2 =
* Bugfixes
* Made the sitemaps class load in backend too so it always generates rewrites correctly.
* Changed > to /> in class-twitter.php for validation as XHTML.
* Small fix in metabox CSS for small screens (thx [Ryan Hellyer](https://ryanhellyer.net)).
* Load classes on plugins_loaded instead of immediately on load to allow WPML to filter options.
* i18n
* Updated bs_BA, cs_CZ, da_DK, de_DE, fa_IR, fr_FR, he_IL, hu_HU, id_ID, it_IT, nl_NL, pl_PL, pt_BR, ru_RU and tr_TR