fix(eval): bug fix for multiline eval (#99)

Resolves the broken multiline eval bug. #97

Author: kindohm

src/repl.ts

@@ -1,13 +1,17 @@
 import { getProcess } from './getProcess';
 
 export const send = (command: string) => {
-    const proc = getProcess();
-    proc.stdin.write(command);
+  const lines = command.split('\n');
+  const proc = getProcess();
+  proc.stdin.write(':{\n');
+  lines.forEach((line) => {
+    proc.stdin.write(line);
     proc.stdin.write('\n');
+  });
+  proc.stdin.write(':}\n');
 };
 
 export const quit = () => {
-    const proc = getProcess();
-    proc.kill();
-}
-
+  const proc = getProcess();
+  proc.kill();
+};