Icub-models

Changed

* Update iCub3 model with new weight, add FT on left leg, increase shoulder pitch limits (https://github.com/robotology/icub-models-generator/pull/223).
* iCub3: Decrease limit of hip roll after installation of hard stop on robot (https://github.com/robotology/icub-models-generator/pull/224).

Fixed

* Fix r_wrist_yaw joint direction in several iCub 2.* models (https://github.com/robotology/icub-models/issues/156, https://github.com/robotology/icub-models-generator/pull/220).

Fixed
* New tuned pidParams for icub3 gazebo model for walking simulations (https://github.com/robotology/icub-models-generator/pull/219).

Fixed
* Make the C++ helper library more robust to system that automatically make the library relocatable such as conda (https://github.com/robotology/icub-models/pull/154).

Fixed
* In Python helper library, fix the `get_models_path()` when the `icub_models` package is installed with the robotology-superbuild (https://github.com/robotology/icub-models/pull/149, https://github.com/robotology/icub-models/pull/150).
* Fix the `PYTHON_ABSOLUTE_INSTDIR` when a relative `PYTHON_INSTDIR` is detected (https://github.com/robotology/icub-models/pull/150)

Fixed

* Fix CMake configuration if Python library installation is enabled (https://github.com/robotology/icub-models/pull/146).