add 12h timeout to .travis.yml
add 12h timeout to .travis.yml


Former-commit-id: 07c08aa20ee7e85b0bec3a8169240f3dba0c96e5 [formerly f5b6a4508e3be23f5cb5e31128c07481c5fdb4dd]
Former-commit-id: 2ec84c4da2376dfa876c15af20fb3c30f2c0b5af
EricLagergren/decimal