add JavaDoc for Task + thinking about TaskEnvironment
add comment
add comment
add TODOs
write JavaDoc for TaskEnvironment
minor reformatting
add JavaDoc
add JavaDoc
add JavaDoc
experiments with generic parameters
experiments with generic parameters
change generic parameters
add comments & update interfaces
add comments
add comments
add comments
write JavaDoc for Pack
done with Pack
update
rename TaskHandler.Status to TaskHandler.State and write JavaDoc for TaskHandler.State