Version 1.7.0
(?? November 2009 from /branches/1.7.x)
http://code.elgg.org/elgg/.....

 User-visible changes:
  * UTF8 now saved correctly in database. #1151
  * Unit tests added to System diagnostics.
  * Debug values output to screen when enabled in admin settings.
  * Users can now log in from multiple computers or browsers concurrently.
  * Misconfigured plugins no longer break the site. #1454
  * User display names cannot have HTML or be longer than 50 characters.
  * New search system.

 Bugfixes:
  * Searching by tag with extended characters now works. #1151, #1231
  * Searching for entities works properly with case-insensitive metadata. #1326
  * Invalid views now default to 'default' view. #1161.
  * Metadata cache now handles a 0 string. #1227
  * ElggPlugin get() now works with 0. #1286
  * Metadata __isset() now works for falsy values (except NULL). #1414
  * clear_plugin_setting() now only clears a single setting.

 API changes:
  * New plugin hook system:unit_test for adding files to unit tests.
  * $is_admin global deprecated; use elgg_set_ignore_access() instead.
  * Deprecated get_entities().  Use elgg_get_entities().
  * Deprecated get_entities_from_metadata().  Use elgg_get_entities_from_metadata().
  * Deprecated get_entities_from_relationship() and g_e_f_relationships_and_meta().  Use elgg_get_entities_from_relationship().
  * Deprecated get_entities_from_access_id(). Use elgg_get_entities_from_access_id().
  * Deprecated get_entities_from_annotations().  Use elgg_get_entities_from_annotations().
  * Reorganized directory file path to rely on GUID instead of username.
  * annotation_id column added to the river database table.
  * remove_from_river_by_annotation() added.
  * unregister_elgg_event_handler() and unregister_plugin_hook() added. #1465
  * clear_all_plugin_settings() added.

 Services API:
  * Separated user and api authenticate processing
  * hmac signature encoding now compatible with OAuth
  * New plugin hook api_key:use for keeping stats on key usage
  * New plugin hook rest:init so plugins can configure authentication modules
  * Moved auth.gettoken to POST for increased security
  * Fixed REST POST bug #1114
  * Fixed #881, #1214, #1215, #1216, #1217, #1218, #1219, #1220, #1298, #1364