Feature/se3vel#94

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nosmokingsurfer wants to merge 8 commits intomasterfrom

Commits on Jun 30, 2021

Initial commit for SE3vel class, the extended SE3 group with velocity coordinates
nosmokingsurfer
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Commits on Jul 1, 2021

SE3velCov class for compounding initial commit #72
nosmokingsurfer
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Commits on Aug 29, 2022

brackets function in namespace mrob, visible for all other files including SE3cov
g-ferrer
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brackets function now defined in SE3cov and used in other files, such as SE3velCov
g-ferrer
committed