Endpoint rewrite rules

Hi there,

in class-wcml-endpoints.php method maybe_flush_rules you are currently flushing rewrite rules like that:

function maybe_flush_rules(){
        if( get_option( 'flush_rules_for_endpoints_translations' ) ){
            WC()->query->init_query_vars();
            WC()->query->add_endpoints();
            flush_rewrite_rules();
            delete_option( 'flush_rules_for_endpoints_translations' );
        }
    }

This leads to the problem that no custom endpoints can be registered because neither init_query_vars nor add_endpoints of WC_Query is filterable leading to 404 errors. You may register an action in this method or search for a better solution.

cheers

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