travis: build for arm64 and amd64

Author: FreyJo

.travis.yml

@@ -10,6 +10,10 @@ os:
 - osx
 - windows
 
+arch:
+- amd64
+- arm64
+
 script:
   - cargo build --verbose --release;
 
@@ -23,7 +27,7 @@ deploy:
   api_key:
     secure: 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
   skip_cleanup: true
-  file_glob: true 
+  file_glob: true
   file: target/release/t_renderer-*
   on:
     tags: true