Catkin

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* fix rollback of environment when workspace has been deleted (`641 <https://github.com/ros/catkin/issues/641>`_)
* fix argument handling when cm / cmi is invoked in a symlinked folder (`638 <https://github.com/ros/catkin/issues/638>`_)

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* fix regression in catkin_make_isolated from 0.6.4 (`624 <https://github.com//ros/catkin/issues/624>`_)
* fix problem when catkin_make / catkin_make_isolated is invoked in a symlinked folder (`638 <https://github.com//ros/catkin/issues/638>`_)

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* add architecture independent flag in package.xml (`625 <https://github.com/ros/catkin/issues/625>`_)
* add error message for circular dependencies in catkin_make_isolated and catkin_topological_order (`607 <https://github.com/ros/catkin/issues/607>`_, `608 <https://github.com/ros/catkin/issues/608>`_)
* add multiarch support for catkin environment files (`545 <https://github.com/ros/catkin/issues/545>`_)
* add workspace marker file for catkin_make / catkin_make_isolated (`304 <https://github.com/ros/catkin/issues/304>`_)
* allow better performance for repeated invocations of find_in_workspaces()
* consider test_depends for topolocial order (`612 <https://github.com/ros/catkin/issues/612>`_)
* invoke empy with specific Python interpreter (`620 <https://github.com/ros/catkin/issues/620>`_)
* support setting ${PROJECT_NAME}_LIBRARIES before invoking catkin_package() (`609 <https://github.com/ros/catkin/issues/609>`_)
* update package manifest to format 2 (`619 <https://github.com/ros/catkin/issues/619>`_)
* fixes:

* fix catkin_find to not return path with '/.' suffix (`621 <https://github.com/ros/catkin/issues/621>`_)
* fix python path setting for plain cmake workspaces (`618 <https://github.com/ros/catkin/issues/618>`_)
* improve unicode handling (`615 <https://github.com/ros/catkin/issues/615>`_)
* replace CMake usage of IMPORTED_IMPLIB with IMPORTED_LOCATION (`616 <https://github.com/ros/catkin/issues/616>`_)
* do not call chpwd hooks in setup.zsh (`613 <https://github.com/ros/catkin/issues/613>`_)
* set catkin_* variables only when find_package(catkin COMPONENTS ...) (`629 <https://github.com/ros/catkin/issues/629>`_)

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* allow passing absolute INCLUDE_DIRS via catkin_package() into CMake config file in install space (`600 <https://github.com/ros/catkin/issues/600>`_, `601 <https://github.com/ros/catkin/issues/601>`_)
* improve error messages for wrong include dirs

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* use underlay workspaces when calculating topological order (`590 <https://github.com/ros/catkin/issues/590>`_)
* remove restriction to run unit test single threaded (`597 <https://github.com/ros/catkin/issues/597>`_)
* support using nosetests with Python3 (`593 <https://github.com/ros/catkin/issues/593>`_)
* remove invalid symbolic links of workspace level CMakeLists.txt file (`591 <https://github.com/ros/catkin/issues/591>`_)
* remove debug_message usage from generated pkgConfig.cmake files (`583 <https://github.com/ros/catkin/issues/583>`_)
* use catkin_install_python() to install Python scripts (`596 <https://github.com/ros/catkin/issues/596>`_)
* fix unicode error with japanese LANG (`578 <https://github.com/ros/catkin/issues/578>`_)
* fix gtest include dir when using gtest inside the workspace (`585 <https://github.com/ros/catkin/issues/585>`_)

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* remove more obsolete files (`582 <https://github.com/ros/catkin/issues/582>`_)