feat(commands): add release script customizability (#12)

.rczrc.onrelease.js

@@ -0,0 +1,14 @@
+const fs = require("fs");
+
+const packageFile = fs.readFileSync("./package.json").toString();
+const newPackageFile = packageFile.replace(
+  /"version": "[0-9]+.[0-9]+.[0-9]+"/,
+  `"version": "${__NEW_VERSION__}"`
+);
+
+fs.writeFileSync("./package.json", newPackageFile);
+
+const indexFile = fs.readFileSync("./src/index.ts").toString();
+const newIndexFile = indexFile.replace(/version\("[0-9]+\.[0-9]+\.[0-9]+"\)/);
+
+fs.writeFileSync("./src/index.ts", newIndexFile);