Log Message:
devel/task: update to 3.41.0

* Fixed: an issue where dynamic variables were not properly logged in
  verbose mode.
* Support: silent for defer statements.
* Added: an option to exclude some tasks from being included.
* Fixed: an issue where a required variable was incorrectly handled in a
  template function.
* Expose: a new TASK_DIR special variable, which will contain the absolute
  path of task directory..
* Fixed: fatal bugs that caused concurrent map writes).
* Refactored: internal ordered map implementation to use
  github.com/elliotchance/orderedmap.
* Fixed: a bug where variables defined at the task level were being ignored
  in the requires section.
* The: CHECKSUM and TIMESTAMP variables are now accessible within cmds.
* Updated: installation docs and added pip installation method.
* Fixed: a bug where dynamic variables could not access environment
  variables.
* Disable: version check for use as an external library.