Data.Thyme.Time: move non-instance code ↦ .Core so we can avoid Num/RealFrac
.travis.install-deps: don't apt-get update
Data.Thyme.LocalTime: rehome instance Show UTCTime from Data.Thyme.Clock
Data.Thyme.LocalTime: getCurrentTimeZone copypasta
thyme.cabal: bump version to 0.2.4.0