v1.9.9 Maintenance release for the osTicket v1.9.x series === Enhancements * Properly balance stripped and invalid HTML (#2145) * Add MANIFEST file to deployment process and retire duplicate code for packaging (#2052) === Improvements * Fix inability to configure LDAP and S3 plugins (*regression*) (59337b3) * Fix incorrect whitespace in search indexed HTML content (#2111) * Add support for invalid `multipart/relative` content type (aaf1b74) * Force line breaks for very long HTML lines (56cc709) === Performance and Security * Fix slow query for ticket counts for large datasets (c4ace2d) * Fix slow thread load query (thanks @torohill) (7b7e855)