* Added two “hidden” config variables ‘email_newline’ and ‘email_crlf’ to modify the corresponding core email class properties.
* Fixed a bug with the display of the “First” link in pagination introduced in 1.6.3.
* Fixed a bug with the search module for MySQL versions < 4.0.2
* Fixed a bug with embedding templates from another Site when templates are saved as files
* Fixed a bug with IP and author comment search in the Edit section of the control panel
* Fixed a bug where require_entry=“yes” in the Weblog Entries tag would still output entries for category and date archive pages.
* Fixed a bug where the Search module would not find an Exact Word if the term submitted was preceded by a tab character in the entry.
* Fixed a bug which would display PHP errors with Stand-alone Entry Form preview when the category= parameter is used.
* Fixed a bug (#4372) where templates from the default template group would not be cached if accessed without the template group in the URL.
* Fixed a bug (#4384) where a MySQL error could occur if a user has administrative privileges to the Templates area but is assigned no Template groups.
* Fixed a bug (#4386) where the Search module would not allow closed status searches even if specified with the status= parameter
* Fixed an obscure bug (#4388) with a SQL query for fetching a user’s assigned weblogs
* Fixed a bug where other tag’s pair variables were not being parsed in Wiki themes.
* Fixed a bug within Communicate that could lead to PHP warnings.
* Fixed a bug with the show_empty= parameter of the Category Archives tag with linear style.
* Modified the emoticon replacement code in the Typography class to be significantly faster.
* Modified Status validation when publishing an entry to be case insensitive
* Modified status= parameter for Reverse Related Entries tag to be case insensitive
* Removed set_time_limit() calls imposing PHP script execution limits
* Deprecated code in the Communicate area that was affecting line breaks on certain servers when sending emails to member groups or mailing lists.
* Reduced the EllisLab News Feed to strictly news items from the ExpressionEngine blogs.