updated lib
update twice-size
remove git modules
Squashed 'lib/twice-size/' content from commit dd5c5a5

git-subtree-dir: lib/twice-size
git-subtree-split: dd5c5a5a98db30d320579de6f30353dc52add0d9
Merge commit '1462a0c36d26a41f0448f5c20ee4e51c9ef25621' as 'lib/twice-size'
Squashed 'test/lib/om636/' content from commit ce2941b

git-subtree-dir: test/lib/om636
git-subtree-split: ce2941bd2cf907b02ce7c21d3edc48fd925cf200
Merge commit 'ed21417917f2d3199ae49d5eceb287b71da01960' as 'test/lib/om636'
twice-size subtree