Adds a Foldable1Usage
add contrasting examples from Foldable for max/min
oops, forgot to add std.option._ for Equals[Option]
Merge pull request #816 from stew/foldable1-usage

Adds a Foldable1Usage
Add Task.fromMaybe

Similar to std.option.toRight, but returns a Task instead of a
disjunction. Located in Task companion object as opposed to Maybe,
because core doesn't depend on concurrent.
Add Task.fromDisjunction

Added to the Task companion object instead of \/ because core doesn't
depend on concurrent.
Merge pull request #822 from ceedubs/task-helpers

Task helpers
scalacheck 1.11.6