Log Message:
Update to 0.13:

General:

     * Remember last active view (Richard)
     * Implement opening files by drag and drop (Richard)
     * 64-bit and Darwin build fixes (Richard)
     * Bug Buddy support (Christoffer Olsen)
     * Support new mime system (Anders, Richard, Takao Fujiwara)
     * Move from bonoboui to gtkuimanager (Xavier Ordoquy, Richard)
     * Added GConf abstraction layer (Mikael Hallendal)
     * Use new filechooser (Anders, Richard)
     * Basic import of MS Project XML files (Kurt Maute, Richard)
     * Updated user guide (Kurt)
     * Improved HTML export (Richard, David Sundstrom)
     * Implement undo transactions (Richard)
     * Experimental support for Evolution (Alvaro)
     * Improved Python bindings (Xavier)

Database support:

     * Work with remote servers (Alvaro del Castillo)
     * Handle installing schemas and upgrading (Alvaro)

Task, gantt, resource usage views:

     * Add duration column to task view (Richard)
     * Show date when hovering over the date scale (Richard)
     * Add column for assigned resources (Chris Morgan)
     * Display allocation percent (Chris Ladd)

Task dialog:

     * Add scheduling editor (Richard)
     * Handle units in lag time (Richard)
     * Handle units in work and duration times (Richard)

Task scheduling:

     * Fix milestone start times (Richard)
     * Improve critical path calculation (Jani Tiainen)
     * Cache task costs (Richard, Doroszlai Attila)
     * New scheduler, fixes bugs and improves performance (Richard)

Printing:

     * Use the printer settings for print preview (Richard)
     * Fix page orientation (Richard)
     * Print percent complete for tasks (Richard)
     * Print the timeline (Richard, Satyadadi)

There are also a number of updated and new translations. Many thanks to
everyone who has contributed to this release: