1.添加多线程支持

2.优化代码结构
3.升级依赖

.github/workflows/build.yml

@@ -1,5 +1,8 @@
 name: build
 on:
+  push:
+      branches:
+        - main
   workflow_dispatch: {}
 jobs:
   build:
@@ -10,7 +13,7 @@ jobs:
         build: [linux, macos, windows]
         include:
           - build: linux
-            os: ubuntu-18.04
+            os: ubuntu-latest
             rust: stable
             target: x86_64-unknown-linux-musl
             archive-name: ncmmiao-linux.tar.gz