Squashed 'lipsum/' changes from 2200345..6b22a48

6b22a48 Improved documentation about expansion using shell pattern
8cbe6c8 Updated ocaml-re from upstream.
501013a Merge commit 'de282d9dc5ab1724c21610e3408f080b6dd31cf1'
de282d9 Squashed 'ocaml-re/' changes from 26cf3ca..242ad7e
9f0443b New feature: expand only root chunks matching a shell pattern.

git-subtree-dir: lipsum
git-subtree-split: 6b22a48639d52866cc35647afb3e5da26b5cba4a
Merge commit 'f9d7f4bb096ac29ef7fd289666d118f2547a2f42'
Fixed: lipsum expand now takes a pattern as argument