Catkin

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* remove CATKIN_TEST_RESULTS_DIR environment variable (`728 <https://github.com/ros/catkin/issues/728>`_)
* catkin_test_results will output skipped xml files only when --all is being passed (`733 <https://github.com/ros/catkin/pull/733>`_)
* extract catkin_add_executable_with_gtest() from catkin_add_gtest() (`726 <https://github.com/ros/catkin/issues/726>`_)
* separate download function from tests (`633 <https://github.com/ros/catkin/issues/633>`_)
* only install environment hooks for catkin_make(_isolated) completion in the catkin package (`732 <https://github.com/ros/catkin/issues/732>`_)
* avoid warning with CMake 3.1 and newer (`731 <https://github.com/ros/catkin/issues/731>`_)
* quote command in "Reproduce this error" instructions (`730 <https://github.com/ros/catkin/issues/730>`_)
* fix Python error when working with non-ascii characters in catkin workspace path (`724 <https://github.com/ros/catkin/issues/724>`_)
* use $TMPDIR for temporary _setup_util.py file if set (`710 <https://github.com/ros/catkin/issues/710>`_)
* fix regex for library config types (`723 <https://github.com/ros/catkin/issues/723>`_)
* fix potential race condition in download_checkmd5.py (`715 <https://github.com/ros/catkin/issues/715>`_)
* output package whitelist / blacklist if set (`714 <https://github.com/ros/catkin/issues/714>`_)
* add --verbose option to catkin_test_results to show the content of result files (`705 <https://github.com/ros/catkin/issues/705>`_)
* source in reset zsh emulation mode (`686 <https://github.com/ros/catkin/issues/686>`_)
* improve help text for --only-pkg-with-deps (`706 <https://github.com/ros/catkin/issues/706>`_)

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* fix return code for tests run by ctest (`703 <https://github.com/ros/catkin/issues/703>`_)

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* check changes to -D args CATKIN_DEVEL_PREFIX / CMAKE_INSTALL_PREFIX when considering to reinvoke cmake (`700 <https://github.com/ros/catkin/issues/700>`_)
* add --use-ninja option to catkin_make(_isolated) to use ninja instead of make (`693 <https://github.com/ros/catkin/issues/693>`_)
* remove 'emulate sh' from setup.zsh (`686 <https://github.com/ros/catkin/issues/686>`_)
* set terminal title only when isatty (`687 <https://github.com/ros/catkin/issues/687>`_)
* add description to catkin_make for ignoring packages
* add suggestion to use catkin_make_isolated for non-homogeneous workspaces
* refactor code from run_tests.py into Python module (`678 <https://github.com/ros/catkin/issues/678>`_)

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* fix regression from 0.6.8 (`676 <https://github.com/ros/catkin/issues/676>`_)

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* make nosetests --xunit-file argument an absolute path to work around nose bug 779 (`659 <https://github.com/ros/catkin/issues/659>`_)
* fix handling of CMake packages which do not install any files (`665 <https://github.com/ros/catkin/issues/665>`_)
* fix gtest on Arch Linux and others (`663 <https://github.com/ros/catkin/issues/663>`_)
* improve generation of .catkin marker file (`671 <https://github.com/ros/catkin/issues/671>`_, `676 <https://github.com/ros/catkin/issues/676>`_)
* escape messages to avoid CMake warning (`667 <https://github.com/ros/catkin/issues/667>`_)
* fix CMake warning for doxygen target with CMake 3 (`660 <https://github.com/ros/catkin/issues/660>`_)
* avoid using ARGN for efficiency (`669 <https://github.com/ros/catkin/issues/669>`_)

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* reset CATKIN_SHELL in devel space generated env.sh files (`652 <https://github.com/ros/catkin/issues/652>`_, `655 <https://github.com/ros/catkin/issues/655>`_)
* ignore cd path echo when using CDPATH (`654 <https://github.com/ros/catkin/issues/654>`_)
* use PYTHON_EXECUTABLE for _setup_util.py (`646 <https://github.com/ros/catkin/issues/646>`_)
* expose PYTHON_EXECUTABLE to environment hook .em templates (`645 <https://github.com/ros/catkin/issues/645>`_)
* catkin_prepare_release:

* add --no-push to catkin_prepare_release (`657 <https://github.com/ros/catkin/issues/657>`_)
* flush stdin before asking for input (`658 <https://github.com/ros/catkin/issues/658>`_)