[new release] xenstore (2.2.0)
[new release] xenstore (2.2.0)

CHANGES:

* Fix crash if watch quto is exceeded (mirage/ocaml-xenstore#47 @talex5)
* Switch to ounit2 (mirage/ocaml-xenstore#49 @Alessandro-Barbieri)
* Add license to opam metadata (mirage/ocaml-xenstore#48 @psafont)

pirbo/opam-repository,kkirstein/opam-repository,pirbo/opam-repository,fpottier/opam-repository,Leonidas-from-XIV/opam-repository,nberth/opam-repository,pqwy/opam-repository,ocaml/opam-repository,jhwoodyatt/opam-repository,codinuum/opam-repository,ocaml/opam-repository,jhwoodyatt/opam-repository,kkirstein/opam-repository,pqwy/opam-repository,codinuum/opam-repository,fpottier/opam-repository,Leonidas-from-XIV/opam-repository,nberth/opam-repository