[[nodiscard]] for return value of setToConfiguration: ensuring that user checks whether robot was set to configuration

adding configurations to robot + loading from xml + selectable via robot viewer

See merge request sw/simox/simox!159

Respect <Limits> tags in hemisphere joints

See merge request sw/simox/simox!157

Use push_back() with out-of-place creation to fix compile issue on Ubuntu 18

See merge request sw/simox/simox!156

Add simox::alg::fuzzy_match and simox::alg::fuzzy_multi_match based on difflib

See merge request sw/simox/simox!155

Remove kinematic connection check in initializeRobot()

See merge request sw/simox/simox!154

Remove kinematic connection check in initializeRobot() since it is checked later when attachements were handled

Fix: Fix using height as half extent for bullet collision shape from primitive cylinder

See merge request sw/simox/simox!152

Flatten robot for physics simulation

See merge request sw/simox/simox!149

Feature/four bar +x

See merge request sw/simox/simox!132

CI: Improve testing, JUnit output

See merge request sw/simox/simox!151