net-mail/mailbox-count: new version 0.0.3.
This new version attempts to support both the ghc-7.10.1 and ghc-8.x
compilers. The newer GHCs require monoid instances to be semigroups,
but the semigroups package wasn't bundled with the GHC until then.
However, requiring a "redundant" semigroups package seems to not hurt,
and should theoretically fix the build with ghc-7.10.1 as well.
Bug: https://bugs.gentoo.org/707836
Package-Manager: Portage-2.3.84, Repoman-2.3.20
Signed-off-by: Michael Orlitzky <mjo@gentoo.org>