PN Scripts Price History for Discounts 1.0.3

Renamed to PN Scripts Price History for Discounts (slug and text domain pnscripts-price-history) after the WordPress.org review.

• Settings move to WooCommerce → Price History; the WP-CLI command is wp pnscripts-price-history; the shortcode is [pnscripts_price_history] (the 1.0.0 tag [pnscripts_omnibus_price] still works).
• Settings and price history are kept on update.
• Plugin page: https://pnscripts.com/marketplace/pnscripts-price-history

Free, GPL-2.0-or-later. By PN Scripts.