Log Message:
glibmm: updated to 2.60.0

2.60.0 (stable):
Glib:
* Add DateTime::get_timezone()
  Add KeyFile::get_locale_for_key()
  Add TimeZone::get_identifier()
* Add Value_RefPtrBoxed<>
  Add Value<std::vector<string>> specializations and other Value
  specializations that are necessary for _WRAP_PROPERTY
* Object construction: Add custom class init and instance init functions
Gio:
* Add AppInfo::launch_uris_async() and launch_uris_async()
  Add DBusConnection::get_flags() and property_flags()
* Settings: Add property_settings_schema()
* TlsClientConnection: Deprecate property_accepted_cas()
* ThemedIcon: Add create(const std::vector<Glib::ustring>& iconnames)
* Remove NO_GTYPE from some _WRAP_ENUMs
* TlsConnection: Deprecate rehandshake API
* Application: Add signal_name_lost()
gmmproc:
* Add _IS_REFCOUNTED_BOXEDTYPE
Build:
* Require glib-2.0 >= 2.59.2

2.58.1 (stable):
gmmproc:
* _WRAP_ENUM and _WRAP_GERROR: Add gtype_func parameter
* docextract_to_xml.py: Add --exclude-file option.

Documentation:
* README: Add installation instructions
* Don’t use @retval on out args, use @param[out]

2.58.0 (stable):
This release is identical to 2.56.1.