Add llvmgraph 0.1
New lilis!
+ppx_deriving.1.0
+ppx_deriving_yojson.2.0
+ppx_deriving_protobuf.2.0
+Abella 2.0.2

Also removed abella.2.0.0, which is now obsolete
Abella 2.0.2 requires OCaml 4.01.0+
travis: Fix the check for package availability on older opams

turns out there used to be no good way of simply checking this, so I'm just trying to
install with --dry-run and expecting an empty stdout if the package is unavailable
Fix opam/url typos.
Revert "Revert "Mark ppx_tools as unavailable on 4.03""
+ocamlfind.1.5.5
Merge pull request #2922 from whitequark/ocamlfind.1.5.5

+ocamlfind.1.5.5
Merge pull request #2921 from whitequark/revert-2919-revert-2906-ppx_tools.compat

Revert "Revert "Mark ppx_tools as unavailable on 4.03""
Merge pull request #2884 from Drup/lilis

New lilis!
Merge pull request #2883 from whitequark/ppx_deriving.1.0

+ppx_deriving.1.0 +ppx_deriving_yojson.2.0 +ppx_deriving_protobuf.2.0
Merge pull request #2881 from Drup/master

Add llvmgraph 0.1
Merge pull request #2930 from mmottl/master

Updates for better string handling with OCaml 4.02
Fix ocaml-version constraint on ppx_tools again.
Addition of portia, a literate programming tool.

Portia is a programmable text processor that allow to extract fragments from a
set of files and recompose some output files from them. It is meant to serve as
a literate programming preprocessor, agnostic to both the format used for the
documentation and the programming language, and thus is adapted to OCaml.

It is itself implemented using literate programming and needs funnelweb
(http://www.ross.net/funnelweb/) for bootstrap.
Merge pull request #2942 from whitequark/fix-ppx_tools

Fix ocaml-version constraint on ppx_tools again