This release contains changes associated with the following GitHub issues:
#44: Add notifications to enable site-specific customizations.
#50: Document that any image/file names containing USU's reg_anchors (e.g. -p-) will also be redirected.
#51: Correct PHP Fatal error when a URL contains invalid characters.
#52: Correct out-of-memory condition for sites with large numbers of products; using per-page caching instead of database-caching.
#53: Drop support for Zen Cart versions prior to 1.5.7a
#54: Use zen_cfg_read_only for the plugin's configured version.
#55: Add support for the ask_a_question page.
#56: Add support for the product_reviews_write page.