Revision history for supervisors

0.2.1.0 -- 2020-01-26

• Fix a bug that could potentially result in some threads not being killed.

0.2.0.0 -- 2018-12-18

• Make the type of withSupervisor more general.
• Drop unneeded dependency on unliftio.

0.1.0.0 -- 2018-11-10

• First version. Released on an unsuspecting world.