Squashed 'native/libot/' changes from b608f3a..4259681

4259681 Change ot_size so delete subtracts from the size

git-subtree-dir: native/libot
git-subtree-split: 425968155f6f60c28fb69996986fa8d859f500fa
Merge commit '5fe89a33412a42d35a7f84cb9daaf798c51f7b7c'
Release for v0.1.3