Link vcruntime statically

Fixes the program not starting on some Windows systems

Cargo.toml

@@ -29,6 +29,7 @@ url = "2.2.0"
 chrono = "0.4"
 rand = "0.8"
 nng = "1.0.1"
+static_vcruntime = "1.5"
 
 [target.'cfg(target_family = "unix")'.dependencies]
 nix = "0.19"

src/main.rs

@@ -25,6 +25,10 @@ extern crate chrono;
 extern crate rand;
 extern crate serde_cbor;
 
+// By default, Rust requires programs to deploy vcruntime140.dll when redistributing binaries on Windows.
+// The static_vcruntime crate statically links the library instead.
+extern crate static_vcruntime; // Required for static_vcruntime to work
+
 use std::{io, env};
 use std::fs;
 use directories::ProjectDirs;