Implement active day functionality.

Cargo.toml

@@ -7,10 +7,9 @@ description = "A CLI habit tracker."
 readme = "./README.md"
 license = "AGPL-3.0-or-later"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 structopt = "0.3"
 uuid = { version = "1.1", features = [ "v4", "fast-rng", "macro-diagnostics" ] }
 serde = { version = "1.0", features = [ "derive" ] }
 serde_json = "1.0"
+time = { version = "0.3", features = [ "local-offset" ] }