After years of nasty back and forth accusations between WordPress hosting provider WP Engine (WPE) and WordPress.org, the open source project that provides the software, on Wednesday WPE sued WordPress.org in federal court, accusing WordPress.org, which is affiliated with a for-profit company called Automattic, of trying to extort money from it. “Over the last two weeks, [WordPress] has been carrying out a scheme to ban WPE from the WordPress community unless it agreed to pay tens of millions of dollars to Automattic for a purported trademark license that WPE does not even need,”the lawsuit fi…