using stable for now until stage is able to build

.travis.yml

@@ -7,13 +7,13 @@ cache:
   - "~/.platformio"
 install:
 - pip install -U https://github.com/platformio/platformio-core/archive/develop.zip || true
-- pio settings set auto_update_platforms true
+# - pio settings set auto_update_platforms true
 - pio settings set auto_update_libraries true
 script:
-- platformio run
+- platformio run -e d1_mini_stage
 deploy:
   provider: releases
-  # prerelease: true
+  prerelease: true
   api_key:
     secure: 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
   file: ".pioenvs/d1_mini_stage/firmware.bin"