Pinocchio 2.6.15

What's Changed

• More documentation for getJointJacobian by @stephane-caron in #1836
• Error when integrating SE3 with the same vector given as input and output by @duburcqa in #1775
• Documentation for Jlog6 by @stephane-caron in #1842
• remove useless header by @nim65s in #1846
• Fix issue with recent change on master branch for ROS-CI by @jcarpent in #1847
• Fix issue with old version of Boost and eigenpy >= 2.9.0 by @jcarpent in #1851

Full Changelog: v2.6.14...v2.6.15