v0.34.1

- CP-38064: compatibility with Core 0.13

Merge pull request #85 from BenSimsCitrix/private/bensi/CP-31450

CP-31450: Add domid to Datapath.attach

Merge pull request #86 from edwintorok/syslog

Use syslog from xcp-idl for now

Merge pull request #81 from kc284/master

Moved from jbuilder to dune and deprecated xcp in favour of xapi-idl.

Merge pull request #80 from jonludlam/new-ocaml-rpc

New ocaml-rpc

Merge pull request #78 from lindig/master

Update opam files for Opam 2

Merge pull request #77 from jonludlam/storage-ppx

Storage PPX

Merge pull request #76 from lindig/master

Simplify PPX processing in jbuild file