Add required PHP extensions to composer.json.
Add required PHP extensions to composer.json.

WebsterFolksLabs/SEOstats,hslatman/SEOstats,WebsterFolksLabs/SEOstats,jslyonnais/SEOstats,MurgaNikolay/SEOstats,eyecatchup/SEOstats,hslatman/SEOstats,MurgaNikolay/SEOstats,jslyonnais/SEOstats