Really compute transitive dependencies in opam_mk_repo (Close: #976).
Use 3.12 M.() to shorten the change.
Fix bugs in the way we visit all the dependencies graph for get_transitive_dependencies.
Fix typo in get_transitive_dependencies.
Update CONTRIBUTING

Correct URL in CONTRIBUTING
Clean more files
Revert "Fix cmdliner dependency."

This reverts commit 0230460d58504d204b4dbc801673034d2ca684e8.
Fix and improve the travis scripts
Merge pull request #990 from samoht/master

various minor fixes
Merge pull request #977 from gildor478/master

Really compute transitive dependencies in opam_mk_repo (Close: #976).
Install cohttp before trying to compile opam-rt in the Travis CI scripts