Merge branch 'future'

.github/CONTRIBUTING.md

.github/workflows/test.yml

.github/workflows/test_future.yml

.gitignore

CONTRIBUTING.md

docs/figs/multirotorplot.png

docs/figs/rvc4_4.gif

docs/source/IK/ik.rst

docs/source/IK/ik_gn.rst

docs/source/IK/ik_lm.rst

docs/source/IK/ik_nr.rst

docs/source/IK/ik_qp.rst

docs/source/IK/iksolution.rst

docs/source/IK/iksolver.rst

...ce/IK/stubs/roboticstoolbox.robot.ERobot.ERobot.ik_gn.rst

.../stubs/roboticstoolbox.robot.ERobot.ERobot.ik_lm_chan.rst

...bs/roboticstoolbox.robot.ERobot.ERobot.ik_lm_sugihara.rst

...ubs/roboticstoolbox.robot.ERobot.ERobot.ik_lm_wampler.rst

...ce/IK/stubs/roboticstoolbox.robot.ERobot.ERobot.ik_nr.rst

...IK/stubs/roboticstoolbox.robot.ERobot.ERobot.ikine_LM.rst