seperate into multiple source files

src/github.rs

@@ -0,0 +1,25 @@
+use crate::global::*;
+
+use semver::Version;
+
+pub fn latest_version() -> Version {
+    let github_body = crate::http::get_body_string(
+        format!(
+            "https://api.github.com/repos/{}/{}/releases/latest",
+            GH_OWNER, GH_REPO
+        )
+        .as_str(),
+    );
+    let github_json: serde_json::Value = serde_json::from_str(&github_body).unwrap();
+    let latest_version = github_json["tag_name"]
+        .to_string()
+        .replace(['v', '"'].as_ref(), "");
+    Version::parse(&latest_version).unwrap()
+}
+
+pub fn latest_release_url() -> String {
+    format!(
+        "https://github.com/{}/{}/releases/latest",
+        GH_OWNER, GH_REPO
+    )
+}