Update `.travis.yml` to support newer `bison` on MacOS.
If it doesn't work, I will revert the last update to `parse.y`.
MODIFY
.travis.yml
.travis.yml
@@ -3,11 +3,17 @@ language: c
sudo: false
matrix:
- include:
- os: linux
sudo: false
- os: osx
- osx_image: xcode7.1
+ osx_image: xcode10.3
+ addons:
+ homebrew:
+ update: true
+ packages:
+ - flex
+ - gperf
+ - bison
env:
- MRUBY_CONFIG=travis_config.rb

Update `.travis.yml` to support newer `bison` on MacOS.

If it doesn't work, I will revert the last update to `parse.y`.