Sphider 3.6.0-MB, SphiderLite 1.3.0 released

A potential runaway regular expression resulting in missing titles has been corrected. Crawl performance has been improved by fixing a bug that caused Sphider to try to crawl pages returning codes like 301, 401, 403, and 404. The absence of a robots.txt file on sites being crawled was generating warning errors, and this has been corrected. More potential PHP 8 errors have been averted. More obsolete code has been removed. The MB version now reports when a feed becomes invalid.