0.1.0.a4
--------

* **New:** Parent tasks and Projects are now collapsible.
* **Update:** The gantt chart is now able to display much more info then
  before. There are two new modes for each of the Grid and Gantt parts of the
  Gantt Chart. Grid can be set to display *Task*\ s or *Resources* and the
  Gantt can set to display *Task*\ s or *TimeLog*\ s.
* **Update:** Horizontal scrolling is disabled in gantt part of Gantt Chart.
  All the drawn tasks and links are now set in position with percent values, so
  they will stick and scale correctly when the split container resize.
* **Update:** Any task out of range is culled in gantt chart.
* **Update:** Added new buttons to change the range in -1/+1 month, -1/+1 week,
  -1/+1 day.
* **Update:** Replaced the **Date.format()** (originally replaced by
  jQueryGantt **date.js**) with **date.format.js** library.
* **Update:** Changed the background of the Grid and Gantt editors.
* **Update:** If the displayed tasks is clipped to the current start end range
  a double red border is displayed in the clipped start or end.
* **Update:** Context menu can now be opened in task names in grid editor.
* **Update:** Optimized the creation of task rows.
* **Update:** Replaced the ``input`` elements with ``div`` in the task row.
* **New:** Holding the mouse on Task bar elements will now show a popup window
  for more info.
* **Update:** Gantt Chart zoom levels are now fully controlled by the start and
  end date DateTextBoxes.
* **New:** Added a new button which will center the gantt chart on today.
* **Update:** Replaced the ``duration`` column with ``timing`` which correctly
  shows the schedule timing info of the related task.
* **Fix:** The ``depends`` column shows the dependent task names correctly.
* **Update:** jQueryGantt displays the owner Project of the Tasks as a
  container task.
* **Update:** Added content link (this will be updated to support proper links,
  hardcoded links to be removed).
* **Update:** Disabled drag and resize of TaskBar elements.
* **Update:** Moved the resource link code to the JST template code instead of
  the Task class.
* **Update:** The timing resolution of jQueryGantt is now 1 hour.
* **Fix:** GanttMaster.task_ids were not properly cleaned in
  GanttMaster.reset(), resulting wrong links to be created.