big refactorings
------------------

Task into TaskDep + Task
TaskControl into Create + Process

0.X
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. more MP (tree)
. setup/task  single process/all procces
. --enable/--disable cmd line options

. dynamic task
. GLOBAL vars from cmd line

. tools - profile
. tools - code coverage

. color output on the terminal. (#263576)
. tab-complete

. option dont save successful results
. forget a dependency, not a task
. option to make sub-task not part of a group
. task name alias
. cache dir files (speed optimization)

needs volunteer
----------------

. windows (#218276)

not clear how to implement
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. dont get subtasks if task is not going to be executed (#370923)
. one .doit for each dodo file
. multiple (include) dodo files (#218279)
. sub-command/task unification. all sub-commands (but run) implemented as tasks
