Release 1.8.0

• General changes/additions
  • augtool: add a 'source' command exposing the aug_source API call
  • augtool: add a 'context' command to make changing into a node more
    discoverable
  • augtool: add an 'info' command to print important information
  • augtool: dramatically reduce memory consumption when all lenses are
    loaded by more aggressively releasing temporary data structures. On
    my machine, maximum memory usage of 'augtool -L' drops from roughly
    90MB to about 20MB. This will not change the amount of memory used
    when only specific lenses are used, only the default behavior of
    loading all lenses, i.e., when -A is not passed.
  • make building augtool statically possible (Jörg Krause)
  • split aug_to_xml into its own source file, so that statically linking
    against libaugeas.a doesn't require also linking against libXml2 and
    its dependencies, provided aug_to_xml is not needed.
• API changes
  • add aug_source to find the source file for a particular node
  • reduce memory consumption when AUG_NO_MODL_AUTOLOAD is not passed;
    exact same details as described above for augtool
• Lens changes/additions
  • Chrony: allow floating point numbers (Miroslav Lichvar)
    add new directives from chrony 3.0 and 3.1 (Miroslav Lichvar)
  • Krb5: support include/includedir directives (Jason Smith) (Issue #430)
    support realms that start with numbers (Dustin Wheeler) (Issue #437)
  • Multipath: update to multipath-0.4.9-99.el7 (Xavier Mol)
  • Php: also look for FPM files in /etc/php/*/fpm/pool.d (Daniel Dico)
  • Postfix_virtual: allow underscores in e-mail addresses (Jason Lingohr)
    (Issue #439)
  • Radicale: new lens for config of http://radicale.org/ (James Valleroy)
  • Rsyslog: support multiple options in module statements (Craig Miskell)
  • Ssh: also look for files in in /etc/ssh/ssh_config.d (Ian Mortimer)
  • Tmpfiles: parse 'q'/'Q' modes, parse two-character arguments,
    parse three-digit file modes
  • Xml: support external entity declarations in the doctype (Issue #142)
  • Yum: also read DNF files from /etc/dnf (Pat Riehecky) (Issue #434)