message: Attempt to fix travis builds on windows.
  I THINK what's happening is that it's unable to link libbz2 and
  such for some reason, so let's see if this works...
diff: @@ -19,7 +19,8 @@ addons:
  cache: cargo
  script:
  - - cargo test --verbose headless
  + - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; cargo test --verbose headless --no-default-features; fi
  + - if [[ "$TRAVIS_OS_NAME" != "windows" ]]; cargo test --verbose headless; fi
  before_install:
  - if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then
  