Cargo Features

tempus has no features set by default.

[dependencies]
tempus = { version = "0.2.4", features = ["posix"] }
posix = libc, system-call

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality [may be removed in the future](https://rust-lang.github.io/rfcs/3491-remove-implicit-features.html).

libc posix?

Enables libc-interface

system-call posix?