Update to 1.842
- New upstream release 1.842
- The Windows hack introduced in 1.841 is 2x slower for one edge case, so
reverted the Windows hack in MCE::Shared::Server
- Fixed race condition abnormalities in MCE::Hobo
- Added Parallel::ForkManager-like demonstration to MCE::Hobo
- Bumped MCE dependency to 1.842