Squashed 'src/remixlab/fpstiming/' changes from 5af7966..589d347

589d347 some minor api improvements

git-subtree-dir: src/remixlab/fpstiming
git-subtree-split: 589d34701c5bf71b9b9b90d3b1ca24b1651d0119
Merge commit '8705cc60b8750231501f101ce0a6e1ec2509cb5a'