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William Woodall authored* reduce the number of jobs on travis * update usage of pip due to changes in Homebrew * update pip and ensure the right one is being used with an alias * force reinstall pip to get `pip` on PATH * use python2 explicitly to run catkin_make * force use of python2 executable by catkin packages * python! * simpler * how to which * Update .travis.yml * make tests and run_tests * test results * disable timer tests on macOS
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