fix: 3.12.1
add stog 0.11.1 (fix release)
Merge pull request #1815 from zoggy/master

add stog 0.11.1 (fix release)
stringext initial version
Merge pull request #1816 from rgrinberg/stringext

stringext initial version
Merge pull request #1813 from hhugo/master

fix: 3.12.1
Changed version scheme (now used semantic versioning).
Update url link with tag version.
Add ibx-0.7.2
Merge pull request #1817 from olgu/ibx

Add ibx-0.7.2
Sync latest compiler pull requests
opium 0.6.1
Merge pull request #1819 from rgrinberg/opium_061

opium 0.6.1
Merge remote-tracking branch 'upstream/master'
added new package itv-tree
Merge pull request #1821 from UnixJunkie/new_package_itv-tree

added new package itv-tree
Add version constraint to fix build error
added v2.0 of itv-tree
last release of oasis
Merge pull request #1825 from UnixJunkie/oasis_v0.4.3

last release of oasis
I just packaged those things for OPAM, nothing else, they have a real
maintainer (ygrek)