Dependency highlighting
Removed unnecessary comments
Cleanup
Inner subtask implementation completed.
Fixes for strikeout
Strikeout/graying out of completed tasks implemented. Partial implementation of dependency highlighting and untested implementation of subtasks. Other minor changes.
Lintz
Fixes #279
Fixed lint.
Merge pull request #286 from angathorion/decorated-tree-root

Strikeout/grayingout of completed tasks implemented. Partial implementation of dependency highlighting and untested implementation of subtasks. Other minor changes.