ToDoList 6.6

- Added 'Ctrl+Mousewheel' zooming in calendar
- Turned off bold attribute in calendar fonts
- Added recurring task support to iCal export
- Added 'Icon' attribute type to custom attribute setup
- Added more options to searching by 'Relative' dates, including 'End of Week/Month/Year'.
- Added 'Alloc to' to 'To' line of email
- Added checkbox to task selection dialog to allow comments to be selected for 'Visible Columns'
- Added preference to always hide parent tasks in list-view
- Added task dependents to info-tip
- Added ability to copy and paste RTF formatting
- Added preference to control 'Percent Done' increments
- Added preference to locate 'Comments' and 'Fields' to left of tasklist
- Added support recurring reminders for recurring tasks
- Added checkboxes to allow custom attributes to be disabled in addition to being deleted
- Added button to allow custom attributes to be imported from another tasklist
- Added new visual styles for printing: Wrapped, Tabular and Paragraph.
- Added a preference has been added to calculate a parent task's due date as being the latest of its subtasks' due dates
- Added preferences to calculate a parent task's start date as being the earliest/latest of its subtasks' start dates
- Added a button to the custom attribute dialog to allow symbols to be used for column titles
- Added a button to allow custom attributes to be imported from another tasklist
- Added support for relative custom dates.
- Allow 'flag' custom attributes to be settable via clicking the tasklist column
- Allow searching on all tasks even if in filtered view
- Improved task caching performance
- Extended 'Recurrence' dialog to support 'First in Month' etc
- Auto-save preferences have been changed to be entirely user-specified
- Heaps of fixes and tweaks