- New upstream release 1.5.1
    - Addresses CVE-2010-4341 - DoS in sssd PAM responder can prevent logins
    - Vast performance improvements when enumerate = true
    - All PAM actions will now perform a forced initgroups lookup instead of just
    - a user information lookup
    -   This guarantees that all group information is available to other
    -   providers, such as the simple provider.
    - For backwards-compatibility, DNS lookups will also fall back to trying the
    - SSSD domain name as a DNS discovery domain.
    - Support for more password expiration policies in LDAP
    -    389 Directory Server
    -    FreeIPA
    -    ActiveDirectory
    - Support for ldap_tls_{cert,key,cipher_suite} config options
    -Assorted bugfixes