Build releases on Windows stable

.travis.yml

diff --git a/.travis.yml b/.travis.yml
index cf7dde1..e6c4f68 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -69,6 +69,8 @@
   file: "./target/deploy/*"
   on:
     tags: true
-    rust: stable
+    rust:
+      - stable
+      - stable-x86_64-pc-windows-msvc
     condition: $CLIPPY != true
     repo: jwilm/alacritty