Canceled task state

[jessegrosjean]

This got complicated, but I think full system is in place, and better to think about this before 2.0 is out then after.

Please see latest release:

Bike 2.0 (Preview 297)

Changed task tracking from @done to @status Added optional row log for tracking things, such as dates of attribute changes Changed Row: Text Delete to leave an empty row behind with the caret in it Added Settings › Extensions › Attributes to configure specific attribute behavior Fixed the context menu system shortcut not working. This release changes how task’s track “done”. Previously this was tracked with a @done attribute and associated date. Now it is tracked with a @status attribute with …